Sourdough Timeline for Beginners

Sourdough baking is not difficult, but it is slow. A single loaf takes roughly 24–34 hours from first feeding your starter to pulling bread from the oven. Most of that time is waiting. The active work — mixing, folding, shaping, scoring — totals about 30 minutes spread across the day. Understanding the timeline makes the process fit your life instead of consuming it.

A realistic 24-hour sourdough timeline

For a kitchen at 72°F with a 1:5:5 starter feed and overnight cold retard:

Evening before, 10:00 PM: Feed starter 1:5:5 (20g starter + 100g flour + 100g water). Leave at room temperature.

Morning, 7:00 AM: Starter has peaked — doubled, domed, bubbly throughout. Mix dough: combine flour and water, autolyse 30 minutes, then add starter and salt. Mix until incorporated.

8:00 AM: Begin bulk fermentation. Target dough temperature 76–78°F.

8:30, 9:00, 9:30, 10:00 AM: Four rounds of coil folds or stretch-and-folds, every 30 minutes. Each takes about 60 seconds.

10:00 AM – 1:00 PM: Bulk rests undisturbed. Watch for 50–75% volume increase, smooth domed surface, visible bubbles through the container.

1:00 PM: Pre-shape on lightly floured bench. Rest 15 minutes. Final shape into banneton. Cover and refrigerate.

Overnight, 12–18 hours: Cold retard in fridge. Flavor develops. Dough firms for clean scoring.

Next morning, 7:00 AM: Preheat oven with Dutch oven inside to 500°F for 45 minutes. Score cold dough directly from fridge. Bake covered 20–25 minutes, uncovered 20–25 minutes until deep golden brown.

Total elapsed: roughly 34 hours. Active time: about 30 minutes. The timeline generator works backward from your target bake time to produce a clock-time schedule for your specific temperature and starter ratio.

Why each step takes roughly that long

Starter to peak (8–12 hours at 72°F, 1:5:5): Yeast multiply from a small seed population through a large food supply. The lower the inoculation ratio, the longer this takes. The starter feeding calculator estimates peak time for any ratio and temperature.

Autolyse (30–60 minutes): Flour hydrates and gluten begins forming passively. This reduces mixing time and improves dough extensibility.

Bulk fermentation (5–7 hours at 72°F): The main rise. Yeast produce CO2, gluten traps it, and the dough roughly doubles. This step is NOT time-based — visual cues matter more than the clock.

Folds (every 30 minutes for first 2 hours): Build gluten structure, redistribute yeast and temperature, trap air. After four sets, the dough has enough structure to rest undisturbed.

Cold retard (8–36 hours): Slow acid production develops complex flavor that same-day bakes cannot achieve. The cold firms the dough, making scoring easier and oven spring more dramatic.

Bake (approximately 45 minutes): Covered baking traps steam for crust development and oven spring. Uncovered baking finishes the crust color and crunch.

How temperature changes everything

A rough rule of thumb: every 10°F increase in ambient temperature roughly doubles fermentation speed.

At 80°F: starter peaks in 4–6 hours (1:5:5); bulk fermentation takes 3–4 hours. Fast but narrow window before over-fermentation.

At 72°F: starter peaks in 8–10 hours; bulk takes 5–7 hours. The most forgiving temperature range for scheduling.

At 65°F: starter peaks in 12–16 hours; bulk takes 8–10 hours. Common in winter kitchens. Patience required.

Summer versus winter kitchen temperatures can mean a 30% shorter or longer timeline for the same recipe. This is the single biggest reason home bakers struggle with consistency between seasons.

Bulk fermentation is about the dough, not the clock

This is the one step you must learn to read visually rather than timing mechanically. Signs that bulk is done: 50–75% volume increase from the start, a smooth slightly domed surface, gentle poke with a wet finger springs back slowly (not immediately, not staying dented), and small bubbles visible through the container walls.

“5 hours at 75°F” is a starting estimate, not a rule. Dough at 72°F pulled at 4 hours because the clock says so is under-fermented. Dough at 82°F left until 6 hours because the recipe says so is over-fermented. Watch the dough.

Common scheduling patterns

Weekend baker (Sunday bake): Friday 10 PM feed → Saturday 7 AM mix → Saturday 7 AM–2 PM bulk with folds → Saturday 2 PM shape + retard → Sunday 7 AM bake.

Evening baker: Thursday 10 PM feed → Friday 7 AM mix → Friday bulk through early afternoon → Friday 2 PM shape → Friday 3 PM retard → Friday 7–8 PM remove from fridge and bake (or Saturday morning).

No-fridge baker: After bulk, shape and proof at room temperature for 1–2 hours. Bake when the surface springs back slowly from a poke. Faster but less flavor development than a cold retard.

What happens if something takes longer

Starter not peaking on schedule: Your kitchen is probably colder than you think. Wait. It will get there.

Bulk going slowly: Same cause. Continue until you see 50–75% volume increase regardless of how long it takes.

Cold retard running long (24–36 hours): Usually fine and often improves flavor. Only a problem if you see significant liquid pooling on the surface and a strong vinegar smell, which indicates over-fermentation even at fridge temperature.

Under-fermented bake: tight crumb, dense texture, possibly gummy center. Next time, extend bulk by 30–60 minutes. Over-fermented bake: collapses when scored, thin walls around large holes, sour taste. Next time, shorten bulk or reduce dough temperature.

Building your own reliable timeline

After 5–10 bakes, you will know your kitchen’s typical temperature, your starter’s behavior at your preferred ratio, and what “ready” bulk looks like in your specific container. At that point you can work from a schedule with confidence. Until then, prioritize dough signals over timing — the dough is always right, even when the recipe is not.