Here's a great recipe for a protein-rich meatless sandwich filling, and an introduction to tempeh.
Tempeh, like tofu, is made from soybeans. Unlike tofu, tempeh retains the whole bean, giving it a different texture and unique nutritional qualities. It has a firm chewy texture and an earthy flavor, mixing well with vegetables in this recipe for 'chicken' salad.
Tempeh originated in Indonesia, and is especially popular on the island of Java, where it is a staple source of protein.