Cassava is another root vegetable. To turn the tuber into flour, it’s first dehydrated and then scraped down. One-fourth of a cup of cassava flour contains 110 calories and zero grams of fat. According to Amaral, it’s a good substitute for people following paleo, grain-free, and nut-free diets. “It also has a component of resistant starch in it,” she says, “which is beneficial for the gut microbes in our GI tract.”
