Rather than pouring my milk into a separate container that requires cleaning (using water and chemicals) just insert a probe into the milk jug (or container) that you get from the store (or in my case dairy farm delivery service).
Every convenience is thought of, and the milk or cream is put in an external stainless steel reservoir the size of a travel coffee cup, which you can keep in the fridge all week, keeps the milk fresher than the container it came in, and easily snaps on when you want milky drinks.