Different brands are more economical depending on where it is manufactured.
Unflavored soymilk can often be found in the refrigerator case at the NFS, usually with goat milk, yogurt, kefir, etc. It keeps for a week or so. Making Soymilk Making soymilk is a fine way to utterly thrash your kitchen, far more effective than merely baking bread. One upon a time I liked making soymilk. One day I was making some, and it boiled over and clogged half the gas jets on the stove.