Amino acids are the ‘building blocks’ of proteins. There are 9 essential amino acids humans cannot synthesize, and therefore must consume [a]. Animal flesh and eggs are praised to no end for their abundance of these amino acids. However, along with these complete proteins, dead animals also generously give humans cholesterol, saturated fat, growth hormones, and antibiotics.
There are a number of cheap & popular ethnic vegan dishes that provide all these essential amino acids [b]. Plus a host of vitamins, fiber, calcium, and iron.