Stevia dried leaves varies in quality due to various environmental factors like soil, irrigation methods, sunlight, farming practices, processing and storage. The best way to use stevia is in its unprocessed form i.e. dried green stevia leaf. These leaves are further processed and crushed in powder form and make a powdered sweetener. It is sprinkled lightly over cooking vegetables, meats and salads. It not only adds its own sweet taste in food but also enhances the flavor and nutritional value of the food.