The primary ingredient in tapioca is cassava, a starchy root vegetable native to South America. Cassava, also known as yuca, is harvested, processed, and then transformed into tapioca pearls, flour, or flakes, which are commonly used in various culinary applications. Tapioca is gluten-free and is often used as a thickening agent in puddings, soups, and sauces. Additionally, it plays a prominent role in popular dishes such as bubble tea and tapioca pudding. The versatility and unique texture of tapioca make it a beloved ingredient in many cuisines worldwide.