Bake this irresistible Sour Dough Starter (Sponge) at home. Made with rye flour, oats, spelt and your grains. Easy step-by-step instructions included.
This Sour Dough Starter (Sponge) is built around simple, easy-to-find ingredients. It comes together quickly and makes 4 servings. The step-by-step instructions below are written to be easy to follow, even on a busy day.
Whether you're rounding off a family dinner, bringing a treat to a gathering, or simply satisfying a sweet craving, this Sour Dough Starter (Sponge) delivers. Serve it warm or at room temperature, and add a scoop of ice cream or a spoonful of whipped cream for an extra-special finish.
Updated Jun 30, 2026