Why journaling sourdough beats memory + intuition

Sourdough operates on a 12-72 hour rhythm. Your memory operates on a 'this morning' rhythm. The compression alone wrecks the signal: by the time you bake the third loaf you've already forgotten what hydration the first one was at. Multiply by half a dozen variables (flour, ambient, bulk time, shaping technique, oven temp) and you're left with hunches that don't survive a colder kitchen in autumn.

After about 20 logged feeds and 3-5 logged bakes, the chart of your starter's behaviour shows up. Mine peaks at 7 hours when the kitchen is at 22°C and at 10 hours when it's at 18°C. Yours will be different. But after three weeks the answer is no longer guesswork - it's just there. You stop scheduling bakes around the recipe and start scheduling them around your starter.

Snap the jar at feed-time, snap it at peak, snap the crumb after the bake. Three photos per bake builds a visual archive that text can't replicate. Six months in, scrolling back through your journal isn't just record-keeping - it's training data for your own eye. You start spotting under-proofed loaves the moment you see them, because you've seen 30 photos of yours over time.

My favourite use case: I share my main starter's journal with my mum, who lives 300km away. She watches me feed, comments on the rise pattern, sometimes catches a stale-feed mistake before I do. Sourdough Tracker does this share at the single starter level - she doesn't see my other starters or anything else. It's the same UX as showing someone your kitchen window: a focused view, scoped to one shelf.