How to Make Sourdough Starter from Scratch at Home
To make a sourdough starter from scratch at home, mix equal parts (by weight) of unbleached flour and filtered water—typically 50 grams of each—in a clean glass jar. Stir the mixture vigorously to incorporate air, cover it loosely with a lid or cloth, and let it rest in a warm spot (70°F–75°F or 21°C–24°C) for…