Stevia Reb-A97% is all natural sweetener, white to light yellow powder, odorless or having a slight characteristic odor, approximately 440 times sweeter than sucrose. It contributes zero calories & zero carbohydrates to finished products. It is derived from Stevia leaves, powder in form.Stevia Reb-A97% is all natural sweetener, white to light yellow powder, odorless or having a slight characteristic odor, approximately 440 times sweeter than sucrose. It contributes zero calories & zero carbohydrates to finished products. It is derived from Stevia leaves, powder in form.