Which legume is noted for having the highest protein content per cup?

The legume noted for having the highest protein content per cup is soybeans. Soybeans contain approximately 29 grams of protein per cup when cooked, making them an exceptional source for those seeking to increase their protein intake. Soybeans are unique among legumes because they provide a complete protein, meaning they contain all essential amino acids necessary for human health, which is particularly beneficial for those following plant-based diets.

Chickpeas, lentils, and black beans, while also good protein sources, do not reach the protein content levels of soybeans per cup. Each of these legumes has its own nutritional benefits and unique profile, but in the context of protein content specifically, soybeans stand out significantly.