put through cheese cloth-don't want to throw out
Think of it like leftover milk or buttermilk.
Mix it with eggs that you will scramble, add to quiche filling, smoothies, soups and the like
My mom likes to drink the liquid I get from yogurt, she says it's really healthy and tasty :)
Don't know about cottage cheese, but I sometimes use the liquid from sour cream as part of the liquid in pie crusts.
use it to knead bread dough