|Part I – Vacuum Sealing – A bit of Physics
I will now tell you, or admit as the case may be, about me learning some realities about vacuum sealing the hard way, and these are things I should have anticipated based on my education. I thought I could vacuum seal refrigerated canning jars of home made salad dressings and other sauces, refrigerate them after vacuum sealing and give them away as gifts with a long refrigerator shelf life. What I didn’t consider was that the very process of vacuum sealing moist or liquid products can be fraught with difficulties when using canning jars.
First, the product tended to exhaust into the flexible vacuum line that connected the canning jar accessory to the vacuum sealer during vacuuming because a properly filled jar put the dressings/sauces too close to the vacuum accessory port, and some of it got sucked out into the vacuum tubing. Second, the appearance of the food changed because canning jars, unlike vacuum sealing bags, do not collapse around the food. What looked like air bubbles formed along the interior glass jar surface, giving the product less eye appeal. Ah well, live and learn. But do we give up? Absolutely not!
Okay, let’s learn some quantitative physics about what really happened. Those bubbles were simply the result of some of the liquid portion of the jar contents boiling off as water vapor, even when the product was pre-chilled in the refrigerator, because of the high vacuum conditions. Thus, the explanation for what happened is that the boiling point of water becomes amazingly low under high vacuum. We all know that water boils at 212º F at normal atmospheric pressure of 14.69 pounds per square inch (PSI) (or 29.92 inches of mercury in a Torricelli barometer) at sea level, but when that pressure is severely reduced to near total vacuum conditions the boiling point changes significantly.
Specifically, refrigerated water at 40º F will boil if the vacuum sealer vacuum level (as shown on the vacuum gauge) is 29.17 inches of mercury, which is down around 0.37 PSI. At a vacuum level of 29.76 inches of mercury water will boil at 30ºF, which as you will note is below the normal freezing point of water (32ºF) at normal atmospheric pressure. When you dial in the effect of having the water mixed with solids and semi-solids in the foods we try to vacuum seal, we find (for other physical reasons I will not cover here) that the water portion will boil at slightly higher temperatures than what pure water will boil under vacuum conditions. Finally, the type of food being vacuum sealed affects the process as well. Salt in the food tends to depress the freezing point and slightly increase the boiling point. What fun!
Sooo … can we vacuum seal liquids and sauces and dressings in canning jars and be successful, and if so, how? Here is one idea I have yet to try with canning jars, but one that I know will work. Put the canning jar with product at least 1 inch from the top and with the canning jar lid and ring on it loosely into a taller hard-sided container (glass or plastic) that will close/seal tightly, and to which you can attach the vacuum line from the vacuum sealer. When you vacuum seal, none of the product will exhaust into the vacuum line, because of the large physical displacement of the product surface from the point of maximum suction. The product will still "boil" slowly and develop the "bubbles" but it will not overflow the canning jar, and after vacuum sealing is complete you can make the product appear normal again by gentle tapping against a soft surface to get the bubble areas to rise to the top. This is similar to getting air bubbles out of cake batter. The moral of this story is clear. Be aggressively determined to be successful, find out what is really happening and use your brainpower to figure out a workable answer. What got me started thinking about the above approach was using the chamber of my vacuum sealer to process multiple 8 ounce canning jars of various products at one time. It was neat and easy, and also a reason to think about purchasing later a vacuum sealer with a deep vacuum chamber.
Recently I saw an ad and a video for a new product, named VacuVita®, on the Internet. I was most pleased as that product does exactly what I was attempting to do by using hard sided containers with vacuum sealing. You might guess that I ordered the complete kitchen set of that product, and it will be shipped sometime in September 2013 (Guess again! It is now October 2015 and I have yet to receive any product!). I will work with it and provide a review in Food Nirvana so that you will know if it works as advertised, and also if I can apply some of my own ideas using it, like vacuum sealing liquid products in canning jars without the problems of using a close proximity vacuum line.
For every funny story about screw-ups I like to tell one about successes you can have if you "think outside of the box," which simply means use your imagination to develop novel solutions to seemingly intractable problems, similar to the above story. My story here is what I learned from reading an obvious fact and not liking that fact, and then doing something different to make the fact irrelevant.
Try to vacuum seal a loaf of bread or a pastry in a plastic vacuum sealing bag and you will see it collapse into a small clump of useless gunk. Taking away the air from the inside of the soft bread/pastry by using a vacuum sealer, while allowing a flexible bag to compress it from the higher air pressure outside, and the loaf of bread or pastry is wrecked. So, does that mean we can’t vacuum seal soft products like bread? No, it certainly does not mean that at all. Yet, makers of vacuum sealers and other literature do not tell you how you can successfully vacuum seal things like a loaf of bread. The secret? Put the bread or other soft baked item into a strong plastic container that will not collapse. Put that container into a vacuum sealing bag and vacuum to your hearts content and let it seal. Voila, you have preserved bread/pastry without freezing or any other physical storage procedure. When you later break the vacuum seal to use the bread it simply gets the air it needs and holds its original shape. I know this works very well as I have done it many times.
Part II - Food Preservatives - A bit of Chemistry
I was delighted to find that I could buy concentrated sodium benzoate solution from the people who sell snow cone syrups, Koldkiss®. Sodium benzoate is used as a preservative for many foods, like pickles, soft drinks, salad dressings, and, well the list goes on and on. The proper amount to use is anywhere from 1/20th to 1/10th of a percent by total weight of the product and the liquid that contains the product. Also, sodium benzoate will not work effectively unless there is some acidity in the liquid, like that provided by vinegar in pickle brine. The optimal pH is 4.5.
Given the proper conditions sodium benzoate can keep products in glass jars from spoiling after being opened, easily for a year, as long as they are kept refrigerated and resealed properly after each use with the lids. That means many products I make, like tomato juice, which is naturally acidic, benefit from the addition of sodium benzoate, such that they can be refrigerated after vacuum sealing with no concerns about spoilage or fermentation. Thus, canning is unnecessary. Another example is the Hot Giardiniera Condiment used on steak sandwiches and subs. Yet a third example is my hot habanero sauce.
Now I get to the science part. Koldkiss® provides instructions to vendors who sell snow cones regarding the use of concentrated flavor syrups, sugar, water, concentrated sodium benzoate solution and their fruit acid product that is used to acidify the final syrup that will be dispensed onto shaved ice. As most snow cone vendors are not educated in chemistry the simple instructions from Koldkiss® are just what they need. But now a person like me comes along and I need to know the exact concentration of the sodium benzoate solution so I can know precisely how much to use with each of the food items I prepare for long term storage, either in a pantry or in a refrigerator.
Koldkiss® declined to share that information with me so I had to use my education and common sense to outwit them and determine for myself the precise concentration of sodium benzoate in their concentrate product.
Thus, the following discussion is about what I did and what I learned. First, I dispensed exactly one tablespoon of their liquid concentrate into a small weighing dish used with my very sensitive electronic reload scale that I purchased from Cabelas®. I weighed it and the total weight of the dish and the contents was 13.25 grams. I then placed the dish in a 160 degrees F oven to evaporate the water from the dish. Once the water was gone I let the dish cool to room temperature and then weighed it again. That time the weight had been reduced to 9.65 grams. Finally, I rinsed the dry sodium benzoate from the dish and dried it completely. I then weighed the empty dish and it was 7.40 grams. Now I had all the information I needed to directly calculate the concentration of the Koldkiss® product.
The total weight of 13.25 grams less the weight of the empty dish, 7.40 grams, yields 5.85 grams of weight for one tablespoon of the concentrate. The weight of the dried product in the dish, 9.65 grams, less the weight of the empty dish, 7.40 grams, yields 2.15 grams of sodium benzoate in one tablespoon of the concentrate. Thus, the weight of the water in one tablespoon of the concentrate is 5.85 grams less the 2.15 grams, or 3.70 grams.
Two tablespoons is one fluid ounce. Thus, each fluid ounce of the concentrate contains two times 2.15 grams or 4.30 grams of sodium benzoate. That is precisely the information I needed to know how many fluid ounces of the concentrate to use in a batch of whatever product I happen to be making. For example purposes, assume I have a mixture of product and liquid that weighs ten pounds. Lets assume I want to use sodium benzoate at the rate of 1/10th of one percent by weight. Thus, 10 lbs. divided by one thousand gives the right amount needed in pounds. That number is 0.01 pounds. Now, knowing that one pound is 454 grams (of any product) I multiply by 454 and my result is 4.54 grams of sodium benzoate as the right amount needed. Thus, I know I need a bit more than one fluid ounce of the Koldkiss® concentrate to add to my product. Specifically, 4.54 divided by 4.30 yields 1.056 fluid ounces.
Now I can multiply the weight of one fluid ounce of the concentrate by 1.056 and know the exact weight in grams of the concentrate I need to measure out and use. Thus, 5.85 grams per tablespoon of the concentrate times two tablespoons per ounce yields 11.70 grams per ounce. Now I multiply the 1.056 fluid ounces I need by the 11.70 grams per ounce and I find that I have to dispense 12.36 grams of the concentrate solution into the weighing dish, and then dispense that liquid into my product and mix it thoroughly. So I use my reload scale to measure out 12.36 grams of the concentrate solution and I don't have to think about trying to do liquid measures down to the thousandth of a fluid ounce. Easy, wasn't it?
Most of the time you will never come across a situation as detailed and necessary as what I had to do to use the Koldkiss® product. But this example shows just how important it can be to dabble in science to get what you want. There is also the consideration that in doing my experiment I might have made an error in measuring of undetermined amount, or an error in my calculations. In science one of the ways we deal with those possibilities is to repeat experiments looking for precision in results. Given the doing of multiple presumed identical experiments we then compare the results and quickly determine the reliability of the experimental procedure in terms of precision. If the results vary widely then the procedure isn't very good.
Accuracy is a related but different matter. For example, suppose the Koldkiss® folks put a second chemical in their concentrate solution besides the sodium benzoate, perhaps to help keep the sodium benzoate in solution. What that would mean is that the weight of the dried product in my experiment would be that of the sodium benzoate plus that of the other dried chemical or chemicals. That means the actual concentration of sodium benzoate in the solution would be less than what I determined. I could do other experiments to determine if that situation exists, but in this case the Koldkiss® folks declare that the only ingredients in their concentrate are water and sodium benzoate, so we put that problem to bed (maybe).
Here is one very important additional point. Koldkiss® could change the concentration of their sodium benzoate solution at any time and not notify their customers of the change. Why might they do that? One reason could be that by doubling the concentration they could package the solution in 500 ml bottles instead of 1 liter bottles, thus saving some money. They would at that point change their instructions to snow cone vendors regarding how much of the concentrate to add to a batch of snow cone syrup. The rest of us who are using the sodium benzoate to do other things than make snow cones would not be any the wiser and we could mistakenly use too much sodium benzoate in our food preservation steps in various recipes. Thus, ALWAYS test the concentration of the sodium benzoate solution when you purchase a new supply, in the manner I explained above, doing what I did.
We still have the issue of how accurately I could measure and then dispense exactly one tablespoon of their product. As I am sure you know, measuring spoons are rather pathetic when it comes to dispensing precise quantities of anything. In a laboratory environment a liquid product would typically be measured and dispensed using either a pipette or a burette, which are finely calibrated glass tubes that are used to hold and then dispense precise amounts of a liquid. Yes, you can purchase products like pipettes and burettes from companies like Fisher Scientific® if you really want to get into this aspect of food science.
Okay, that is enough science for today! Class dismissed!
I conclude this section with the simple idea that your income can go further and your quality of life can get better if you will learn to take advantage of modern food preservation and processing technology. All you have to do is use your native intelligence and have some curiosity and sometimes the willingness to experiment. The rewards are great and your inner feeling of independence and satisfaction will put a smile on your face often. You are in charge.
Ahi Tostadas - ?
Food Nirvana had only one recipe (Sesame Ahi) using Ahi tuna and that had to be changed. Ahi is great stuff! Basically, it is extremely fresh tuna that can be eaten raw without fear of bacterial contamination. Thus, Ahi is used often in Japanese sashimi, and it is frequently seared but kept rare in the middle and sliced for upscale salads and other types of dishes in the USA. You will have to visit a high end seafood market to find Ahi. Regular supermarkets do not normally sell it as it is a specialty food with a short "shelf" life.
I found a recipe for Ahi Tostadas online and it looked so good I decided to add it to the Appetizer section of Food Nirvana. The recipe is pretty simple and it combines quite varied textures and tastes.
I will make the recipe and report back with results, though I can tell already it will be very good if not excellent. As provided the recipe will make four servings, two tostadas per person.
1 tablespoon of lemon juice
1 large egg
1/4 rounded teaspoon of sea salt
1/2 cup of light olive oil
1 chipotle pepper, deseeded and cut or crushed
Put the lemon juice, egg and salt into a blender. Slowly start blending the ingredients, adding oil little by little, until the mayonnaise is thick and you have added all the oil.
Add the diced chipotle chile pepper and blend in. The yield will be three-fourths of a cup, and you will have most of that left over after using it to make the tostadas.
1 1/2 cups of vegetable oil (for deep frying)
8, 3 inch diameter corn tortillas
2 leeks (about 1 cup sliced)
2 teaspoons of extra virgin olive oil
10 ounces of sashimi-quality tuna (Ahi), sliced one-fourth inch thick then cut in half, if necessary
1/4 cup of soy sauce
1/4 cup of fresh lemon juice
1 ripe avocado, peeled, pitted and cut into eighths
1/4 cup of chipotle mayonnaise
Heat the vegetable oil in a deep skillet to 350 degrees F. Fry each tortilla until crisp, about 2 minutes. Drain between paper towels. Set aside.
Slice the leeks (white part only) into one-fourth-inch-wide julienne strips. Heat the olive oil in a small skillet over very low heat. Add the leeks, sprinkle with a little sea salt and cook them until they are soft but not browned, about 5 to 7 minutes.
Marinate the Ahi slices in the mixture of the soy sauce and lemon juice for 2 to 3 minutes. Drain the marinade from the Ahi.
Spread 1 1/2 teaspoons of the chipotle mayonnaise on each tostada.
Divide the tuna among the tostadas.
Top the tuna with the leeks and add a slice of avocado to each tostada.
Arby's BBQ Sauce - ►
The well known barbecue sauce from Arby's® is something nice to have in your home kitchen for homemade roast beef sandwiches. I happened to see a recipe on the Internet so I decided to put it in Food Nirvana. It wasn’t even close when I tested it and even my addition of ¼ cup of Classic Kansas City BBQ Sauce didn’t help enough. This recipe is going into the research category until I figure out how to make it authentic.
1 cup of ketchup
2 tsp. of water
1/4 tsp. of garlic powder
1/4 tsp. of onion powder
1/4 tsp. of pepper
1/4 tsp. of salt
1/2 tsp. of Tabasco sauce
¼ cup of Classic Kansas City BBQ Sauce
Combine all ingredients in a small saucepan.
Cook over medium heat, stirring constantly, until the sauce boils.
Remove the sauce from the heat and cool to room temperature, covered.
Refrigerate the sauce. It will keep for a month or more.
Makes one and one quarter cups.
Carrabba’s® Dipping Oil - ☺♥
This fairly well known dipping oil from the Carrabba’s® restaurant chain is great to serve with warm Italian or French bread as an appetizer. I got it from the Internet and it belongs in my recipe book simply because it is the best I have tasted.
Recipes like this one lend themselves to many variations based on what each of us like best. I suggest starting with this one and then experimenting with crushed fresh herbs and perhaps a very tiny amount of rice vinegar. Fresh herbs, especially oregano, rosemary and basil should boost the flavor considerably. Using all fresh garlic instead of granulated and fresh garlic will add to that effect. See below.
1 teaspoon of crushed red pepper
1 teaspoon of ground black pepper
1 teaspoon of dried oregano
1 teaspoon of dried rosemary
1 teaspoon of dried basil
1 teaspoon of dried parsley
1 teaspoon of granulated dried garlic
1 teaspoon of minced garlic clove
1 teaspoon of kosher salt
1/4 cup of extra virgin olive oil (or as needed)
Simply mix all of the dry ingredients, put them into a glass jar with a lid and keep that at room temperature, and then serve small amounts of the herbs, spices and oil on small saucers with Italian or crusty French bread for dipping. At Carrabba’s® they keep the oil separate from the dry ingredients and that practice guarantees the right combination on the dipping saucer, for if you put all the ingredients into the oil it is virtually impossible to get the ideal mixture to dispense onto the dipping saucer.
According to the recipe I found, additional olive oil can be added to the herbs and spices in the storage container to create more of this delight as needed until they are gone. But somehow I think the flavor on subsequent oil additions will be weaker, and the benefit of keeping the oil separated from the dry ingredients until serving time is lost. I suggest using fresh herbs and garlic in the oil in advance to guarantee full flavor.
Thus, the truly clever way to enhance the dipping oil is to use fresh herbs and minced fresh garlic in quantity in a larger bottle of oil. Then, use that oil without capturing the materials you put into it and mix the flavored oil with dry herbs at the time of use, the way it is done at Carrabba’s®. Thus, the oil alone already carries intense herb/garlic flavors, and the dry herb role is more decorative and effective.
Chicken Parmesan Meatballs - ☺♥
Apart from the fact that the name of this delectable treat is illogical (Fowl isn't Meat) the rest of what you are about to read is the real thing. I went looking on the Internet for chicken recipes to find something out of the ordinary that I might be allowed to eat during my recovery from a recent illness. What I found, with my modifications, turned out to be pure serendipity. All it took was one taste of the meatballs (Fowlballs? [ha, ha!]) and I knew I had another great addition for Food Nirvana. On thinking about various ways these meatballs might be served I concluded the most appropriate food category, from the categories available within Food Nirvana, was Appetizers, for these things taste so good they should be served as is at parties. Perhaps one day I will create a Comfort Food category within Food Nirvana and populate it with a variety of named dishes, some of which will be cross-referenced where appropriate to recipes listed within Food Nirvana by food type, like entries under the category, Fowl.
Okay, the first thing to do is to give credit for the recipe as I first found it, and the source is apparently Rachael Ray of Food Network®. I tip my hat to Rachael, for this recipe, admittedly with my considerable variations from the given recipe, is excellent. I am sure you will find this to be a very easy recipe and that you will really enjoy the results. I was completely and very pleasantly surprised. The recipe as given below makes 24, 1 1/4" diameter meatballs.
1 lb. of boneless skinless chicken breast
1 cup of unseasoned bread crumbs
1/2 cup of Hellmann's® Mayonnaise
1 tbsp. of Bell's® Poultry Seasoning
1/2 cup of shredded or regular Parmesan cheese
1 tsp. of sea salt (cut to ½ tsp. if regular Parmesan cheese is used)
4 tbsp. of extra virgin olive oil
Preheat the oven to 400 degrees F. If your oven has a convection oven feature then use it.
Grind the chicken breast pieces using a meat grinder. I use the appropriate grinder attachment with my KitchenAid® mixer.
Mix all of the ingredients except the olive oil in a two or three quart mixing bowl. Mix well with a large spoon and then by hand to assure complete mixing.
Form the mixture using your hands into approximately 24, 1 1/4" diameter meatballs, placing the meatballs onto a sheet of waxed paper.
Put the olive oil into a large high temperature resistant heavy skillet. I use a 12" diameter all metal stainless steel with steel cladded copper base skillet.
Place the meatballs onto the olive oil with even spacing, then heat the skillet on medium high heat until the meatballs start to sizzle in the olive oil.
Saute' the meatballs on medium heat for about three minutes (it is not necessary to turn the meatballs over during saute'ing) and then place the skillet into the preheated oven.
Bake the meatballs for 20 minutes at 400 degrees F. Then turn on the broiler and broil for five minutes without allowing any time for the broiling element to reach proper temperature. The idea is to lightly brown the tops of the meatballs. It is smart to check the degree of doneness after three to four minutes to make sure the tops of the meatballs do not become dark.
Remove the skillet from the oven and put the meatballs on a paper towel to cool slightly and to drain off any excess olive oil.
Serve the meatballs hot in a preheated serving bowl, along with whatever other hor d'ourvres you are providing to your guests. They are excellent as is without any sauce or other seasoning.
Expect applause. It will be forthcoming.