> Was fresh whole milk hard to get? It wasn't exactly unavailable, but there wasn't an abundance of it. And much of it was consumed in the form of kefir or so

> Was fresh whole milk hard to get? It wasn't exactly unavailable, but there wasn't an abundance of it. And much of it was consumed in the form of kefir or sour cream, or butter, or cottage cheese... Sure, you can turn a bottle of milk and a bag of flour into a pizza, but when the steps for doing so start including 'making your own cheese at home', is it any surprise that people would turn those ingredients into other, simpler-to-prepare/more-culturally-familiar foods?