Commercial sourdough starters arrive dehydrated and dormant, and bringing them back to life requires patience most people don't have. You're meant to feed them—flour and water, exactly—for a week or more before baking, but most home bakers lose faith by day three when the mixture looks inert and smells like nail polish. The frustration is real: a dead starter feels like failure. The 1-2-3 Method That Actually Works Instead of buying starter, build your own using a simple 1-2-3 formula by weight: 1 part starter (or flour on day one), 2 parts flour, 3 parts water. Feed daily at the same time. By day five or six, you'll see consistent bubbling within 4–6 hours of feeding. The key? Use whole wheat or rye flour for the first few feeds—wild yeast populations respond faster to the bran. Switch to all-purpose after day three once fermentation is established. Keep your jar in a consistent spot, ideally 70–75°F. Cooler kitchens extend the timeline; warmer kitchens accelerate it. "Consistency matters more than temperature. Neglect is the real killer." Once your starter passes the float test (a teaspoon floats in water), you can bake. Even if you're not baking immediately, feed it once a week and refrigerate. Most started cultures fail because people expect perfection from day one; sourdough is partnership, not chemistry.