Protein is the name for the essential amino acids. A complete protein contains all of the amino acids.
Eggs are considered the most complete, and other protein sources are measured against them.
Meat, dairy, soy, nuts.
Most foods contain some amino acids, so it is possible to combine them to form a complete protein
Rice and beans
It is not necessary to combine them all at one meal, as the body will store them for a period of time.
I hope this is helpful. Christopher Maloney, Naturopathic Doctor Augusta, Maine www.maloneymedical.com Individualized research available for a fee. Informational only, I cannot treat or diagnose via the web.