Lupin is a legume flour made from sweet lupin beans, a GMO-free soybean alternative. Keto Friendly! It is uniquely high in protein and dietary fiber. Each 1/4 cup contains just 1 net carb, and is high in antioxidants! You can still enjoy your sourdough bread using the Lupin Sourdough starter in your favorite Keto or Ketoivore egg bread recipe to get a better rise. You will receive 200ml/3/4 cup of active lupin sourdough starter. Store in the fridge. To grow your starter. You feed it weekly with 2 tablespoons of lupin flour with 100g of filtered water and mix it well. Shipping is available. Priority Mail, Postage, and Handling will apply.