Animal sources of foods, such as fish, meat, poultry, eggs, milk cheese, and yogurt, contain all the essential amino acids. For this reason they are called complete protein sources.
Legumes, seeds, and nuts are the best source of plant proteins. However, no single piant protein has all essential amino acids in adequale amounts. For this reason they are called incomplete protein foods.
Plant proteins can be combined with either animal proteins or certain other plant foods to make complete protein foods Following are some of these combinations
legumes seeds or nuts(peanuts with mixed nuts)
legumes pains beans and rice, peanut butter on bread, tortilla and refried beans tofu vegetable stir fry over noodles) any plant protein dairy products or eggs(macaroni and cheese rice pudding)