Eggs are a cheap source of what is known as a complete protein as they contains all 9 essential amino acids. They also contain many more important nutrients. Omelettes are easily made and easily digested - great dish to make on your Siansplan green cooking day. Add grated cheese before you fold the omelette in half. Add leftover ingredients like cooked chicken, ham, mushrooms, onions peppers etc before the omelette is cooked.