A few weeks ago, I posted a photo of Capri's milk with the cream separated in the jar. I really didn't think a lot about it until after I followed up. Originally, I thought that one jar of milk was an oddity so have watched it since. Her milk still separates like that; her milk is consistently around 40 percent cream right now. I thought the separation could possibly have something to do with the way I process it. I would love for others to experiment and see if you can get your goat's milk to separate like that as well.
Because I go to work most days after I milk, I put the milk directly in the freezer and leave it there until the next morning when I put the new milk in the freezer. From the freezer it goes into my vegetable drawer where it takes two to three days to fully thaw. When it is thawed, the cream is separated though shaking it mixes it thoroughly again.
Recently, I have been buying N.D. milk which did not separate, even after nearly a week and trying a smaller portion. Thinking it might have something to do with the freezing, I put some of the purchased milk in the freezer but it did not separate either. This leaves only that it must have something to do with putting it in the freezer warm and letting it fully freeze that causes it to separate. Maybe it has to do with the cream molecules reacting differently; it is definitely a puzzle. The only other answer is that it is unique to Capri and that seems unlikely.
I would love it if some of you would experiment with perhaps 2/3 of a pint of milk in a pint jar and freeze it right after milking. Leave it frozen for 24 hours then let it thaw slowly in the refrigerator and see if it separates.
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Sounds like a fun experiment! I hope I can remember to do it this week when I get home. I was wondering why you posted in another thread that a cream separator seemed unnecessary. My goat milk doesn't show any separation for a few days, but it isn't much at all. If one wants to separate all of their cream as people do with cow milk, then a cream separator is definitely necessary with goats.