Happiness, for a cook, is a freezer full of homemade stock. When it's frozen in 1-cup portions, it's all the more easy to know how much to thaw for a recipe. The next time you make a batch of stock or have some left over from a store-bought package, ladle it into 1-cup muffin tins and place them in the freezer. After the stock is frozen, pop the portions out of the tin; store them in resealable freezer bags and label them with the date.
An Easy Way to Stock Up
Martha Stewart Living, December 2004