I have an unopened plastic container of "heavy whipping cream" -- not homogenized, "lowest temperature pasteurized"-- that has a "best by" date of today. Can I freeze this for use later?
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"According to the USDA, heavy cream can be frozen for up to four months but may not be suitable for all future applications. To experiment, we froze 1 cup portions of heavy cream in airtight containers for three days and let them thaw in the refrigerator. We found that when thawed, granular flecks were suspended in the liquid. Don’t be alarmed! Freezing can cause some of the cream’s homogenized microscopic fat globules (invisible to the naked eye) to merge into larger, very visible fat globules. Luckily, when heated for Alfredo sauce or caramel, no difference will be evident. However, frozen and dethawed heavy cream will not create billowy peaks and will produce lumps in whipped cream and other applications where fluffiness is paramount."
It's will separate in the freezer but will be fine.
When I have heavy cream that I can't use right away I just shake it into butter and buttermilk to extend the life. I use way more butter than I do heavy cream.