Split peas are high in protein and low in fat, containing only one gram of fat per 350 calories (1,500 kJ) serving. Most of the calories come from protein and complex carbohydrates. The split pea is known to be a natural food source that contains some of the highest amounts of fibre, containing 26 grams of fibre per 100 gram. Fibre is known to help the digestive system and to make people feel full and satiated. Yellow peas tend to have a more earthy flavour.