A Game-Changing, Single-Ingredient, Gluten-Free, Grain-Free, Nut-Free, Paleo flour with the taste and texture of wheat. Otto's Cassava Flour subs 1:1 by weight in many of your favorite recipes, without tedious alterations. If your recipe calls for cups, just reduce volume by 25 Percent . Also known as yuca, cassava is a delicious root vegetable that becomes the perfect alternative for wheat when dried and ground using our proprietary preparation (say THAT 5 times fast.). Otto's Cassava Flour is a whole food you can feel good about. Made from the entire root, minus the peel.