I would say probably not. Tempeh is made of soybeans, which aren't allowed until one of the last rungs of the OWL phase. So I'd either chuck it or maybe make it for a family member?
Tofu is made from soymilk. The soy beans are crushed and mixed with water. The resulting milky fluid is the soy"milk". If you add a magnesium salt to the soymilk, it will coagulate the protein. So tofu is a type of soy protein, with few carbs, as compared to soymilk which is just strained crushed soybeans and water.
Tempeh is made by fermenting whole soybeans with a mold.
I forgot to add. That coagulation is why tofu used to be called "soy cheese" in the 1960s through the early 1980s in many vegetarian cookbooks. Dairy cheese is made in a similar way: milk, plus a coagulate, plus heat, the milk proteins coagulate into "curds". The curds are removed from the liquid (the whey) and pressed and allowed to age.
Nowadays, soy cheese is an imitation cheese made from soy. But back in the days when I was a vegetarian (late 80s-early 90s) the vegetarian convenience/processed food industry was practically non-existent and that imitation cheese didn't exist.
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