- Joined
- Dec 24, 2017
- Messages
- 701
How big is your aloe plants? Never thought of fd that.
Organisms will live through FDing. Even salmonella and botulinum. Penicillin and plasma were freeze dried to send overseas during WW2.New test. I wanted to do yogurt to use as a shelf stable yogurt starter for future batches. Sometimes it’s hard to get the yogurt we use as our starter so we have to buy it when we can. I then divide it into individual batch servings, put in jars then freeze. By having it as freeze dried starter instead of frozen would clear out quit a bit of jars and freezer space.
Researched online and really couldn’t find information on doing it. Those who freeze dry yogurt are not caring if the bacteria etc is still alive. They freeze dry at the standard temps which in theory is to hot for viable yogurt starter. I researched and researched and haven’t found anyone who covers the temperatures etc. The temp is 95* that we mix the room temperature starter into the milk so figured that must be a safe temperature. Turned the freeze drier heat temperature down to 95* and put in the yogurt.
Once it was done I tried a batch of yogurt from the “starter”. It appears to have worked. Yogurt has set up and is now in the fridge. Tomorrow once it’s cooled I’ll give it a taste test.
View attachment 77794
At 125* it will survive?Organisms will live through FDing. Even salmonella and botulinum. Penicillin and plasma were freeze dried to send overseas during WW2.
New test. I wanted to do yogurt to use as a shelf stable yogurt starter for future batches. Sometimes it’s hard to get the yogurt we use as our starter so we have to buy it when we can. I then divide it into individual batch servings, put in jars then freeze. By having it as freeze dried starter instead of frozen would clear out quit a bit of jars and freezer space.
Researched online and really couldn’t find information on doing it. Those who freeze dry yogurt are not caring if the bacteria etc is still alive. They freeze dry at the standard temps which in theory is to hot for viable yogurt starter. I researched and researched and haven’t found anyone who covers the temperatures etc. The temp is 95* that we mix the room temperature starter into the milk so figured that must be a safe temperature. Turned the freeze drier heat temperature down to 95* and put in the yogurt.
Once it was done I tried a batch of yogurt from the “starter”. It appears to have worked. Yogurt has set up and is now in the fridge. Tomorrow once it’s cooled I’ll give it a taste test.
View attachment 77794
It does both. All part of the process. Here’s a quickie video if it helpsI don't have my freeze dryer yet and have yet to read the instructions but isn't it supposed to freeze stuff? Not heat it up? I better read those directions before Feb!!
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