Yes, you can definitely have a hot cereal made from quinoa. In fact, for 1 oz. of dry cereal, you can substitute 4 oz. of any kind of cooked grains or potato/yam. If it’s a packaged product, though, just make sure it does not have any sweetener or flour in the first three ingredients. Quinoa flakes would be used just like oats—1 oz. dry would be cooked up with 4-6 oz. liquid to make your hot cereal.