How to Plan a 50-Loaf Sourdough Bake Day

Fifty loaves is the size where a sourdough hobby quietly turns into a business — and where "I'll just start early" stops working. The fix isn't more hustle; it's planning backward from the moment the bread has to be cool and bagged. Here's the whole method, with a real schedule and the numbers worked out.

Plan backward, not forward

The single most useful habit for a market bake is to build the schedule in reverse. Don't ask "when should I start?" Ask "when does the bread need to be cool, bagged and labeled?" — then walk every step backward from there. A loaf out of the oven is not a finished product; it needs 1–2 hours to cool before it can be bagged without going soggy, plus time to label and load the car.

Sourdough makes this both harder and easier than yeasted bread. Harder, because the timeline is long and the levain has to be ready hours before you mix. Easier, because an overnight cold retard (shaping in the evening, refrigerating, baking in the morning) gives you a huge, forgiving window — and lets you bake in sequential batches from the fridge.

The real bottleneck is your oven, not your mixer

Most new sellers plan the dough carefully and forget that 50 loaves cannot bake at once. Your bake window — not your mixing speed — sets the shape of the whole morning. The math is simple and worth doing before anything else:

1. Loaves per bake — how many fit in your oven at once (a home oven with two Dutch ovens: 2; a small deck or rack oven: 6–10).
2. Cycle time — the bake itself plus loading and reloading. Sourdough at ~40–45 min bake plus a few minutes to swap means roughly a 50-minute cycle.
3. Number of bakes — loaves ÷ loaves-per-bake, rounded up.
4. Total bake window — number of bakes × cycle time.

For our example baker with a deck oven that holds 8 loaves and a 50-minute cycle: 50 ÷ 8 = 6.25 → 7 bakes. 7 × 50 min = 350 minutes ≈ 5 hours 50 minutes of continuous baking, before preheat. That number changes everything: if the last loaf must be out by 8:00 a.m., the first bake has to start around 2:10 a.m., and the oven has to be preheating well before that.

The ingredient totals (worked out)

Before the clock, settle the grams. We'll use a common market loaf: 900 g of dough each, at 78% hydration, 2% salt, 20% levain. In baker's percentages that's a 200% total formula, so flour is exactly half the dough weight: 450 g of flour per loaf. Multiply by 50 loaves, then apply each percentage to the total flour.

Sanity check: 22,500 + 17,550 + 450 + 4,500 = 45,000 g, exactly 50 × 900. The totals reconcile, which means the scaling is right. (Selling more than one product? You repeat this per recipe and add the flours together for your order — which is exactly the bit that gets error-prone by hand.) If you want true hydration, remember the 4.5 kg of levain carries roughly 2.25 kg of flour and 2.25 kg of water with it — use our levain calculator to build the right amount and keep some back to feed.

The schedule, end to end

Here's the whole bake mapped backward from a Saturday 10:00 a.m. market. Times assume a warm-ish room (~24°C); use a dough-temperature calculator to hit a consistent dough temp so your bulk timing doesn't drift season to season.

Friday — build, mix, bulk, shape

Saturday — bake from cold, in batches

Notice what the backward plan exposed: the bake has to start at 2:10 a.m. — a fact you'd never guess by planning forward from "I'll get up early." That one number determines your whole Friday.

The mistakes that wreck a 50-loaf day

Planning as if it all bakes at once

The fatal one. If you assume 50 loaves come out together at 8:00 a.m., you'll start the bake 5 hours too late. Do the bake-window math first and let it set your start time.

Building the levain too late

You cannot conjure 4.5 kg of ripe levain at mixing time. If you build it when you start mixing, it won't be ready for 8–10 hours and your whole schedule slips a day. Build it the morning before.

Forgetting the back-of-bake time

Cooling, bagging, and labeling 50 loaves is real work and real minutes. Bag a warm loaf and it sweats and goes gummy. Budget the cool-down and the labeling into the schedule, not "after."

Letting one starter do two jobs

The levain for this bake and the mother you feed for next week are the same culture — so always build extra and keep some back. Bakers who use it all end up rebuilding a starter from a scrape, which takes days.

Eyeballing dough temperature

A 3°C swing in dough temperature can move your bulk time by an hour — which, on a backward schedule, throws off shaping and your whole evening. Target a dough temp and adjust your water to hit it.

Do it once by hand — then let software hold the clock

Plan one bake day by hand like the one above; it's the best way to internalize how the pieces fit. After that, you shouldn't be re-deriving start times and shopping lists every weekend. That's exactly what DoughPlan is for: enter your formulas once, drop in this week's orders, and it scales every recipe to the quantities ordered, rolls all the flour, water, salt and add-ins into one aggregated shopping list, and builds the time-reversed schedule — including when to build your levain and when to start each bake — so the whole plan above is generated for you in seconds. If you came here after the Castiron shutdown, this is the back-of-house piece storefront tools never gave you.

Frequently asked questions