lifesource foods oat fiber 500 (3 lb) keto, zero-carb, gluten-free, all-natural fiber for low-carb baking and bread, ou kosher, resealable pouch lifesource foods our famous lifesource foods oat fiber 500 is the not-so-well-kept secret for taking your ketogenic, low-carb, and gluten-free baking and cooking to the next level. an incredibly versatile dietary fiber with zero net carbs, zero calories, and 5 grams of fiber per serving, oat fiber 500 improves the texture, moisture retention, and shelf life of your baked goods. for low-carb baked goods, it is especially effective when paired with lifesource foods vital wheat gluten. it can also add a fibrous boost to smoothies, shakes, and sauces. better yet, oat fiber 500 is all-natural, non-gmo, and kosher.how to use: replace 1 tbsp of flour with oat fiber in any baked good for a zero-carb, texture-improving, fibrous boost, or closely follow any recipe that calls for oat fiber.