Question about skimming fat from raw whole jersey milk

[scasnerkay]

On Friday I brought home a little under 2 gallons of lovely milk and stored it in the frig. Today each jar had about 1 inch of cream at the top, which I skimmed off to make ice cream!!  Is the milk left over considered non-fat, or kind of close to it? I doubt I removed all the cream, and I am wondering if there is a way to know what the remainder might be.

[WovenMeadows]

No, the fat won't full separate from the milk just by gravity. Based on taste I've always thought it comes out to be about 2%ish. And doing the math, I usually skim about 1/2 gallon of cream from a 4 gallon pot, and from that 1/2 gallon churn about 1 pound of butter. Subtracting that amount of fat from the remaining milk, it comes out in my case to about 2.2 to 2.5% fat, after starting with 5% fat (which we learned from having a milk test).