Vegan protein powders are made from plant-based sources, such as peas, soy, rice, hemp, and chia seeds, among others. These ingredients are processed to extract the protein, which is then often combined with other ingredients, such as sweeteners, flavorings, and thickeners, to create the final product. The source of the plant-based protein and the processing methods used can affect the quality, taste, and nutritional content of the protein powder.