Buttermilk: how to tell if spoiled?
I just found out I can freeze leftover buttermilk. I have a carton left over from making scones; my recipe only calls for Â½ cup so a lot gets wasted. How long does it generally keep once opened? It seems like yogurt or sour cream keep a long time after opening, does buttermilk do the same?
Can I tell if it is still good enough to freeze by just tasting?