The liquid or semi-solid portion of sourdough starter removed during the feeding process, typically before the addition of fresh flour and water, can be repurposed in various culinary applications. This material, often considered a byproduct of sourdough baking, retains the characteristic tangy flavor developed during fermentation but generally lacks the leavening power of a newly fed starter. Consequently, it finds use in recipes where rise is achieved through other means, such as baking powder, baking soda, or eggs. Examples include pancakes, waffles, crackers, and cakes.
Utilizing the removed starter portion offers several advantages. Primarily, it reduces food waste by preventing the unnecessary disposal of a viable ingredient. Furthermore, it imparts a distinctive sour flavor to dishes, enhancing their complexity and depth. Historically, resourceful bakers have sought methods to minimize waste, and employing this starter byproduct is a continuation of that tradition. Recipes incorporating this ingredient offer a way to experiment with sourdough flavor without committing to a full, leavened loaf.