Why is stevia powder white?

Stevia powder is white primarily due to the extraction and purification process of the sweet compounds, mainly steviol glycosides, from the stevia plant's leaves. During processing, the leaves are dried and then subjected to extraction methods that remove impurities and plant materials, resulting in a concentrated, refined product. This purification typically yields a white or off-white powder, which is visually appealing and often preferred for use in food and beverages.