Grown in the tropics, the cassava or tapioca plant produces a fleshy edible root stock. A nutritious starch is extracted from cassava and formed into pearls. Our small pearl tapioca is all-natural, containing no sulfites or other additives. You can see our quality. bob's red mill is the most unique flour mill in the northwest. We use century old stone grinding equipment to freshly mill whole grain products. Delight your family with whole grain goodness. All natural.