Fruits preserved in honey
We bought a jar of raspberries preserved in honey on a recent trip to New York. They're absolutely beautiful, and although we haven't opened the jar yet, it promises to be fabulously delicious. The only ingredients are honey and raspberries, and the raspberries are whole and look as if they haven't been heated at all. Is it safe to preserve fruits in honey? If so, would you just cover the fruit in honey? My intuition is telling me that it can't be that easy, but I haven't been able to find any information on this subject in my usual sources.
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The first case of botulism suspected to be caused by honey happened in the late 1970's, the Chinese started exporting honey infused with HFCS in the early 1970's. If botulism was an issue with HONEY instead of HFCS it would have appeared long before 1978. Indians on the subcontinent have been giving raw honey to infants for HUNDREDS of years, with no real documented harmful effects. The germans and gaelics would do the same throughout history. So the more you know..
Dr. S. Mladenov performed experiments with honey's preservative effects in a labs setting. The control was a sugar solution of glucose and sucrose in a similar water content solution. Items preserved were chicken eggs, seeds, liver and kidney tissue. The eggs were preserved for 2 years with no microbial growth, the liver and kidneys were preserved for 4 years with no microbial growth. All of the controls using sugar solution failed within days. The seeds after 1 year had a higher germination rate and more vigor than the control as well. Honey is a PROVEN preservation technique, within reason. Adding pounds of ground hamburger to a jar of honey probably won't bode well, however taking into consideration its limitations- fruit, seeds, meats and eggs CAN be preserved in honey safely.
Bees are a wonder of nature, their entire existence does nothing to detract or destroy from nature in any way. All of their food is accumulated while performing a service to plants, and doesn't detract from the plant nor the process of pollination (quite the opposite.) Honey, propolis, pollen, and beeswax all have documented health benefits imparted by the plants and the bees themselves. Even bee venom has proven to CURE and treat diseases like MS, Arthritis, Lupus, and other immunological disorders or inflammations in a large amount of cases when taken therapeutically in bee Venom therapy techniques.
-Honey is not just sugar
-Honey is a preservation technique
-Bees are amazing creatures
Sources: http://honeypedia.info/the-preservative-effect-of-honey
While alcohol is indeed toxic to microorganisms, as with all toxins (and honey -- see post above), the key is concentration*. For example, wine yeast flourishes at lower levels (witness the alcohol content of a bottle of wine). It takes around 20% alcohol in solution before most microbes will be dead. You can see this effect at work in fortified wine (wine preserved with added alcohol).
* Other factors enter into the equation including time, temperature, aW and pH.
On a separate note, don't we need an indent (or something) to show when people are replying to early posts? I just tried to review the whole thread and got stuck in the honeycomb of answers.
I personally think that the raspberries in honey were cold packed, honey poured on top, and then probably flash pasteurized. I work in a shared kitchen that has a small-scale glass bottle/jar pasteurizer. It seems likely to me that a product like that would receive similar treatment.
As for your question about raspberries retaining their shape, I recently made a Raspberry Jam from the Blue Chair Jam Cookbook that called for a portion of the raspberries to be cooked down with the sugar, and when at the proper jelling stage, removed from the heat, with whole fresh raspberries gently folded in. These raspberries kept their shape beautifully, and of course, for food safety, were canned in a hot water bath.
It's a myth that honey is unspoilable and that it's some sort of super food. Nutritionally it's not much different from table sugar and, as it comes from the hive, it often carries botulism spores (the reason you don't feed it to infants) and sugar-fermenting yeasts. If you've ever kept a bottle for a long time you will likely have noticed that soon begins to darken in color and takes on an off flavor (as it can do when cooked).
That said, honey is relatively stable and doesn't require refrigeration for safety. But the minute you combine it with something that raises its moisture content or pH, trouble can ensue. Raspberries are acidic relative to honey but they're about 90% water which would raise the water activity level in short order. Remember the first rule of food preservation -- always use a tested recipe!
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Because of its extremely low moisture content, honey will keep indefinitely. In fact, still edible honey has been found in the burial chambers of Pharaohs in the Pyramids of Egypt!
The secret of honey's preservative power is that it contains less moisture than yeasts and bacteria do. It literally sucks the moisture out of bacteria, killing it in the process. A few types of bacteria have a casing around them that protects their moisture from honey, but they can only survive in honey. To multiply and thrive they must break through the protective casing, and that requires a higher moisture level than honey provides.
It's important to protect honey's low moisture levels to keep it from spoiling. Since it's so dry, honey acts as a moisture magnet. It will absorb humidity from the air, and can become moist enough to ferment in humid conditions. For this reason it's important to keep your honey in tightly sealed containers.
End quote.
Do your own research and decide yourself.
It isnt honey that is being questioned, but by the way can in fact create issues, it is THE ADDITION OF FRUIT! AS IN RASPBERRIES THAT IS THE ISSUE. Do yourself a favor and read up on canning. I implore evryone here not to make irresponsible comments about food safety, as I have in other posts. The saying "A little knowledge is a dangerous thing" is particularly apt here, as you are potentially putting Food52 members, their loved ones and others at risk if they follow advice on food safety from an uninformed source.
So yes, you are 100% incorrect in this instance, and your lifting of text from a google search actually details why. "It is important to keep Honey's low moisture levels to keep it from spoiling."!!! Raspberries are close to 90% water, and it is their introduction to the Honey that creates the moisture conducive to bacteria growth! I have had a lifetime of canning experience, am a graduate of the French Culinary, and hold a Food Handlers Certificate from NYC, and have read and studied these topics significantly. And none of that makes me an expert on the subject, you should always err on the side of safety, and when canning or preserving always use a tested recipe, not "Decide for yourself", or worse here, disseminate dangerous, erroneous and potentially life thretening advice
It isnt honey that is being questioned, but by the way can in fact create issues, it is THE ADDITION OF FRUIT! AS IN RASPBERRIES THAT IS THE ISSUE. Do yourself a favor and read up on canning. I implore evryone here not to make irresponsible comments about food safety, as I have in other posts. The saying "A little knowledge is a dangerous thing" is particularly apt here, as you are potentially putting Food52 members, their loved ones and others at risk if they follow advice on food safety from an uninformed source.
So yes, you are 100% incorrect in this instance, and your lifting of text from a google search actually details why. "It is important to keep Honey's low moisture levels to keep it from spoiling."!!! Raspberries are close to 90% water, and it is their introduction to the Honey that creates the moisture conducive to bacteria growth! I have had a lifetime of canning experience, am a graduate of the French Culinary, and hold a Food Handlers Certificate from NYC, and have read and studied these topics significantly. And none of that makes me an expert on the subject, you should always err on the side of safety, and when canning or preserving always use a tested recipe, not "Decide for yourself", or worse here, disseminate dangerous, erroneous and potentially life thretening advice
Voted the Best Reply!
I agree with you, though, that logically honey can and will ferment if any sort of yeast is introduced (and wild yeasts are all over fresh fruits). This is essentially how mead is made but not something you'd want in a preserve. I just really want to solve the mystery of how these folks (it's an Italian company) managed to keep the raspberries so pristine and the preserve safe to eat. Perhaps they did put it in a water bath. It just seems unlikely considering the state of the fruit.
Providing the fruit in the jar was clean and without any foreign bacteria, all should be fine (although super sweet).