Cassava is a type of root vegetable, kind of like a sweet potato. So it's chuck full of carbs. One forth of a cup of cassava flour has 28 grams of carbohydrates which is more than half of the general rule. Which is to have under 50 grams of carbs per day. Although, cassava flour is good for you because it's made from a root vegetable; there is no grain! So cassava flour is a great flour to use for those on a grain-free or paleo diet. Cassava flour is great for a grain free diet, paleo diet, vegan or anti-inflammatory diet, but not for keto. A better flour choice for keto would be coconut flour or almond flour!