Stretch and Folds by Feel
Your dough is mixed, the salt is in, and now a shaggy mass sits in a bowl for the next four or five hours. That stretch is bulk fermentation, and stretch and folds are how you build strength into the dough without kneading it like an ordinary bread.
This is one of the few hands-on points in the whole process. Most of sourdough is waiting and guessing; here you get direct feedback and can feel the dough change in real time.
What a fold actually does
A fold does two jobs: - Organizes the gluten. You're not whipping in air. You're lining up the gluten strands so they trap the gas the yeast is already making. Think of squaring up a stack of lumber that's gone cattywampus — you're not changing what's there, just aligning it so it can hold weight. - Evens out temperature and food. The bottom of the dough sits warm near the bowl; the top runs cooler near the air. Folding mixes the two so fermentation happens evenly instead of one side racing ahead.
The actual method
Wet your hand first. Dough sticks to dry hands like nothing else, and you'll fight it instead of working it. Then:
- Reach down one side of the bowl, underneath the dough.
- Pull that edge up and over to the opposite side, laying it down on top.
- Turn the bowl a quarter turn.
- Repeat three more times, so you've gone all the way around.
That's one set, about 20 seconds once the motion is down.
Timing: - Do a set every 30 minutes for the first two hours of bulk. - After that the dough usually doesn't need it — it'll start holding its shape, and you just let it sit and finish rising.
For a standard loaf that's four sets total. Some people do more, some fewer. I do four because it's worked consistently at our elevation and I've stopped messing with it.
What you're feeling for
- First set or two: loose and a little sloppy, tearing if you pull too hard. That's normal — fold gently and move on.
- By the third set: real resistance. It pushes back and holds a stretch instead of ripping. That's the gluten doing its job, and the first time you feel that shift you won't need me to describe it again.
If it's still tearing on set three or four, your hydration is probably too low for what you were after, or your flour is thirstier than expected. King Arthur bread flour behaves differently than a generic store brand — that's fine, just adjust water next time.
Where I've seen people go wrong
Water temperature matters more than people think. An early loaf of mine came out like a hockey puck — dense all the way through, gummy in the middle, wouldn't rise no matter how long I gave it. The cause was water mixed in too cold; between that and our dry air, the dough crusted over before it got a real chance to proof, and the surface sealed before the inside could develop. Mixing with water closer to 80-85 degrees made the problem disappear.
So if your dough feels tight and dry on top during folds, don't just push through it: - Wet your hands more. - Work faster. - Get it covered again right after each fold.
A few minutes of exposed dough in our air can matter. And don't over-flour your surface or hands to stop sticking — a little water beats flour at this stage, and you don't want dry flour dropped into a dough whose hydration you already balanced.
Where I'd err
Given the choice, I'd rather you stop folding a little early and get a slightly under-fermented dough than keep pushing for the big airy crumb everyone chases online. An underdone loaf still slices fine and makes a good sandwich. An overfermented one goes slack and gummy and falls apart on you. That's my take, and it's saved more loaves than it's cost.
Cover the bowl between folds — damp towel or a lid, it doesn't matter much. Just don't let the top skin over.
Before next time
Do your four sets with a timer running; don't eyeball the 30 minutes. Pay attention to when the dough starts pushing back against your hands instead of tearing. That feeling is the whole lesson.