We raised Holsteins, not much butterfat nor cream, so had to add a Swiss or Jersey for the testing. I think we went thru 2 gals a day when we 5 kids were growing. Glass jugs, yes. Any butter we got meant a vat of 2000# of milk hadn't cooled properly and so was one of our chores to check temps during the milking and during the day. Clabber, shudder, never could stand that stuff. Really love Daisy sour cream, but was accustomed to making sour cream with lemon juice so that never slowed me down. I cannot say I am fond of buttermilk- it just seems wrong to me. Not accustomed to goats milk at all, but I do like a soft goat cheese. The hard goat cheeses remind me of chewing plastic...