What about legumes like lentil or beans?

   Raw legumes are very hard to digest. They also have a high concentration of protein that makes it difficult for the body to cope with. Soybeans can have 20-28% protein. Seeds or nuts are around 10% protein. Oats are around 10% protein. Other grains are around 12%. Some legumes, like mung beans and lentils, can be sprouted and are delicious.