Psyllium powder is a common keto ingredient that is high in fiber and low in carbs. It is often used in keto sourdough bread recipes to produce a light and springy loaf. Psyllium husk, also holds the bread together like gluten, although it is completely gluten free. Similar to sourdough, psyllium powder is also prebiotic, meaning that it supports the growth of good bacteria in the gut. It's also incredible at regulating blood sugar levels, as well as lowering cholesterol levels, so you can enjoy the benefits of normal sourdough bread on keto any time you like!