Sourdough Starter Culture

I got into sourdough during lockdown like apparently everyone else. What kept me interested past the first loaf was the starter itself, this jar of living culture that you feed flour and water every day. It slowly develops a smell and a personality of its own. My starter smells sour and yeasty in the morning and more vinegary by evening. Bubbles on the surface tell you whether it's ready to bake with or needs another feeding. The whole process feels like keeping a pet that also makes bread. The science behind it is genuinely interesting. Wild yeast and lactobacillus bacteria from the flour and your kitchen air colonize the mixture, creating a stable ecosystem that can last for decades if you keep feeding it. Some bakeries in San Francisco have starters dating back to the 1800s. Online communities trade dehydrated starter samples through the mail so you can try a culture from a different region and see how it behaves in your kitchen. Flavor depends on the ratio of bacteria to yeast, the hydration of your dough, fermentation temperature, and proofing time. Even with the same recipe, results change depending on the weather. I still buy store bread most weeks because sourdough takes about 18 hours from start to finish. But the loaves I bake taste different in a way that's hard to describe, more complex and slightly tangy with a chewier crumb.