Just reading about tempeh.......
"Tempeh is a fermented food made by the controlled fermentation of cooked soybeans with a Rhizopus mold (tempeh starter). The tempeh fermentation by the Rhizopus mold binds the soybeans into a compact white cake. Tempeh has been a favorite food and staple source of protein in Indonesia for several hundred years.
But tempeh is now rapidly becoming more popular all over the world as people look for ways to increase their intake of soybeans and isoflavones.