Peak, and why timing feeds off the room
Today it's peak, because peak is the thing that actually decides whether your bread rises or sits there looking sad.
Peak is the point where your starter — or your dough, later on — has risen as far as it's going to for that stretch and is about to come back down. That's all it is. Not a mystical state. The top of the curve, right before gravity and hungry yeast start winning again.
The part people don't state clearly enough: peak isn't a time. It's a look. And how long it takes to get there depends entirely on your room.
Why the clock lies to you
When a recipe says "let your starter peak in 6-8 hours," that's true for whoever wrote it, in their kitchen, at their elevation, with their water. It's not a promise for your kitchen.
We're up around 4,600 feet here, and things move faster than sea-level recipes expect. Warm kitchen in July, your starter might peak in four hours. Same starter in a chilly kitchen in January, it might take ten. Same jar. Same feeding. Different room, different day, different answer.
I learned this the hard way with my first few loaves — followed a rise time from someone who clearly did not live anywhere near this elevation, let the dough run the full time stated, and ended up with something overproofed and slack that fell flat in the oven. The dough was done long before the clock said it was. I just wasn't watching it.
So here's the opinion I'll actually push on you: watch the dough, not the clock. Up here it matters double. Set a timer as a reminder to go check, sure. But the timer is not the answer. Your eyes are.
What peak actually looks like
For your starter, in the jar: - It's risen to roughly double, sometimes a little more - The surface is domed, maybe slightly convex, bubbly all over, not just around the edges - If you look at it from the side (mark the jar with a rubber band or a line, whatever) you can literally watch the line it hit - It still smells good at this point — a little sour, a little yeasty, not sharp or boozy
Past peak, it starts to sink in the middle. The dome collapses a little. It can start to smell more vinegary, almost acetone. That's not dead, that's just past its moment for that particular use. You can still bake with it, might just take a bit longer to get where it needs to go, or the rise might be less vigorous. Not a disaster. Just information.
How to actually catch it at home
- Feed your starter at a consistent time if you can. Doesn't have to be exact, just roughly the same window so you start learning your own kitchen's rhythm.
- Mark the jar. Rubber band at the starting level. Cheap, works, tells you exactly how far it's climbed without guessing.
- Check it every hour or two once you're in the general window where you expect it to be close. You're not babysitting it all day, just checking in.
- Use it right around peak, or shortly after the dome starts to level out but hasn't sunk yet. That's when it's got the most lift left in it.
- Write down what time it peaked and what the kitchen felt like — warm, cold, humid, whatever. Notebook by the flour, same as always. After a few weeks you'll have your own data instead of someone else's recipe.
The hiking group learned this the hard way, sort of
My hiking group — Gregory, Darrell, and Brandon — got roped into being my Saturday taste testers a while back, after our morning routes. One week I brought a loaf I was pretty sure had gone past peak before I baked it. Dense, a little gummy, didn't rise the way it should've. I told them straight up what happened — I got distracted, missed the window, baked it anyway to see what it'd do.
Darrell, who now specifically requests a rosemary loaf every single time and acts like I owe him one, ate two slices of the dense one and said "still tastes fine, just heavier." Which, fair. Missing peak doesn't ruin bread. It just changes it. Good to know that too, so you're not panicking the week you miss your window.
A caution worth stating plainly
If you're timing a rise on a warm day, especially in summer when our kitchens can get warm fast, check more often than you think you need to. Overproofed dough doesn't just rise less, it can also get slack and hard to shape, and it's more likely to deflate when you handle it. Nothing dangerous about it, just wasted effort if you don't catch it in time.
Before next time
Mark your jar with a rubber band before your next feeding, and just watch where the line ends up and when. That's the whole assignment.
- J