Pea protein is a type of food. It is a source of protein derived and extracted in powder form from the yellow and green split peas, Pisum sativum, classified in the legume food group. It can be used as a supplement to increase an individual's protein or other nutrient intake, or as a substitute for other food products. It is also used as a functional ingredient in food-manufacturing, such as a thickener, foaming agent, or an emulsifier.