Tapioca starch, also known as tapioca flour, is a grain and gluten-free product commonly used in cooking and baking. Extracted from the roots of the cassava plant, it has gained popularity due to its versatile uses in both sweet and savory recipes. Tapioca starch has a neutral taste and is often used as a thickening agent in recipes such as pies, sauces, and soups. It is also a key ingredient in many gluten-free flour alternatives, providing structure and texture to baked goods. Due to its unique characteristics, it helps create a chewy texture and crisp crust in baking, which is why it's a staple ingredient in making Brazilian cheese bread and bubble tea pearls. Its light, finely ground texture also allows it to easily mix and dissolve in both warm or cold water. When used in appropriate quantities, it can elevate your cooking and baking experience.

Tapioca starch can usually be found in the baking goods aisle, specifically where you'd find flour and other types of starches. In larger grocery stores, there might be a specific section for gluten-free products where you could also find tapioca starch. Additionally, it can sometimes be found in the international foods aisle, especially in the section with Asian foods.