Pasteurizing frozen milk
I normally pasteurize my goats milk before I freeze it, however I also freeze some Raw milk. Can I pasteurize my goat milk after I have frozen it raw?
Best Answer
There should be no problem with this from a food safety point of view. Freezing will "pause the clock" on spoilage, because bacteria's metabolism needs liquid water to happen. When you unfreeze, the food is as safe (or unsafe) as when you froze it.
You should ensure that your thawing process is also safe. If you have the time, thaw overnight in the fridge. If you don't, do it quickly. For a liquid product like milk, stovetop heating will be probably best. Don't just leave it in the counter to thaw.
I don't know if there will be some texture problems (such as clumping) if you cook or pasteurize previosly frozen milk. Try it out and see if it is OK. If yes, you can keep doing it.
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Can you pasteurize milk after its been frozen?
There should be no problem with this from a food safety point of view. Freezing will "pause the clock" on spoilage, because bacteria's metabolism needs liquid water to happen. When you unfreeze, the food is as safe (or unsafe) as when you froze it.Can milk be preserved if frozen?
Defrosting and using frozen milkYou can safely store frozen milk in your freezer for up to 6 months, but it's best if you can use it within 1 month of freezing. Milk should be defrosted in the fridge as opposed to at room temperature to decrease the risk of bacterial growth.Can you pasteurize milk yourself?
Pasteurizing milk is a simple concept: the recommendation is to heat milk to 161 degrees for 15 seconds (please note that this is far gentler than grocery store pasteurized milk, which is heated to nearly 300 degrees!) or to 145 degrees for 30 minutes.#18 What happens if you freeze pasteurized milk - Freezing Experiment
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