A good natural foods store should offer a heady palette of beans, and many supermarkets are following suit. Beans all respond to the same basic treatment, but each will yield its distinctive character to the result. To start, it's always a good idea to look through them for stones, discolored beans, and anything else you don't want to eat. Then soak them, and drain.
Refried beans are simple to do, and a natural place to start with Mexican-style cuisine, since they find their way into many other dishes. They can be reheated again and again, to stuff burritos, tostadas, and enchiladas. Surrounded on a platter by salsas, olives, sour cream and guacamole, they are the basis for a colorful tray of dips for crisp tortilla chips. Wrapped in a tortilla with grated cheese and salsa, quickly warmed in microwave or stovetop frypan, they will fuel a Little-Leaguer through any windy spring game (spectators, too).
Use this lovely salsa/sauce in eggs, burritos, on baked potatoes with sour cream, in all bean soups or chilis, with baked or grilled fish, chicken or meats--anything needing a flavor flash. Or, use as the sauce for hearty enchiladas.
Yams are lovely in color and texture, perfect as a background for bright spicy peppers. They are also very nutritious, and indispensable to vegetarians. Try this easy and satisfying combination. Serves six.