Jananet's Sourdough Bread
The loaf we make at the masterclass
A proper naturally-leavened loaf with a crackly crust and open crumb. Most of the work is waiting, and the dough is far more forgiving than it looks.
Before you start
Your starter needs to be properly awake — bubbly and doubled. See the starter planner, including what to do if it doubles before you're ready to bake.
Method
Tap a step to tick it off as you go.
Timing guide
Aim for 40% bigger, and no more than 50%. Time is only ever a guide — watch the dough, not the clock.
Room temperature Estimated time Notes 16–18°C 12–14 hours Slow rise 19–20°C 8–10 hours Typical cooler climate 21–22°C 6–8 hours Room temperature 23–24°C 4–6 hours Warm kitchen 25–27°C 3–4 hours Watch closely Dutch oven
- 0Put the loaf in the freezerWhile the oven preheats, put the covered banneton in the freezer. The colder, firmer dough is much easier to turn out and score.
- 1Preheat the potPut your Dutch oven inside, lid on, and preheat to 240°C. Give it a full 30 minutes once up to temperature — you want the cast iron properly loaded with heat, not just the air around it.⏳ 30 mins waiting
- 2Score, steam, and coverGet the scored loaf into the screaming-hot Dutch oven, drop 2 or 3 ice cubes down the side (not on the loaf), and get the lid on fast. That burst of steam keeps the crust flexible while the loaf springs up.
- 3Bake with the lid onTurn the oven down to 220°C and bake for 30 minutes with the lid on.⏳ 30 mins waiting
- 4Lid off, finish and colourTake the lid off, drop to 200°C, and bake another 25 to 30 minutes. Keep an eye on it — ovens run hot and you may need to come down to 180°C. You're after deep colour on the crust and a loaf that's cooked through rather than gummy in the middle. Cool it completely before slicing.⏳ 30 mins waiting
Getting the crust right
Three things do the work, and they stack:
A properly preheated Dutch oven. Cast iron holds far more heat than air. Half an hour at 240°C with the lid on means the loaf hits a searing surface the moment it lands, which is what drives the oven spring.
A frozen loaf. Straight from the freezer the surface is firm, so the blade glides instead of dragging, and the score opens cleanly instead of tearing.
Ice cubes. Two or three down the side of the pot flash to steam under the lid. Steam keeps the crust flexible while the loaf rises, then the lid comes off and it crisps and colours.
Three ways to fit it around your day
A daytime bake. Mix at 8:00am, rest at 8:30, salt in at 9:00, folds from 9:30 through to about 12:30. Bulk ferment through the afternoon, watching the dough. Laminate, shape and refrigerate that evening, then bake the next day.
An overnight bulk ferment. Mix at 4:00pm, do your folds between 5:00 and 8:00pm whenever it suits, then bulk ferment overnight. Shape and refrigerate in the morning, and bake when you're ready.
Minimal effort. Do the folds whenever you can. Let the bulk ferment run long if it needs to. Shape when the dough looks ready and refrigerate until it's convenient. This dough really is forgiving.