Crust, Crumb, and Knowing When It's Done
Okay. Your loaf is in the oven, lid's come off or the cover's come off the bowl, and now the whole thing rides on whether you can tell "done" from "not done yet" without cutting into a hot loaf and finding out the hard way.
I'll be straight with you, this is a hard one to teach because so much of it is feel. But there are numbers and signs that get you most of the way there, so let's go through them.
What "done" actually looks like
You're watching for three things.
Color. You want a deep amber to almost mahogany brown, not blonde, not black. Blonde crust means underbaked, the crumb inside will be gummy and it'll taste like flour paste. Too dark and you're into bitter territory, and yeah, I've been there. Chasing a darker crust is how I set off my own smoke alarm in front of a gym crowd I'd invited over for the demo, and they got jerky-hard bread for it. That one's on me. The oven ran hotter than I thought and I let it go too long trying to get "one more shade." Don't do what I did. Pull it when it looks right, not when it looks impressive.
Sound. Pull the loaf out, flip it over, and knock on the bottom with a knuckle like you're knocking on a door. You want a hollow sound, like knocking on a hollow-core interior door, not a dull thud like knocking on a stud wall. That hollow sound means the inside's dried out enough and isn't still wet dough.
Temperature. This is the one I trust most, because it's a number and not a vibe. Stick an instant-read thermometer into the center of the loaf. You want 205 to 210 degrees Fahrenheit. Under 200 and you're probably gummy in the middle. I don't mess around with guessing on this one, I use the same probe thermometer I'd use on anything else, it was maybe twelve dollars, and it tells me the truth every time color and sound might not.
Letting it cool, which is the part everybody skips
Here's the part that trips up almost every beginner I've had come through, including me for a good while. You take that gorgeous loaf out of the oven, it smells incredible, and you want to cut it right then. Don't. The crumb is still setting. There's steam and starch structure happening inside that loaf for a good hour after it comes out, and if you slice into it hot you'll get a crumb that looks gummy even though it's actually fully baked. You'll blame the loaf. It's not the loaf, it's you not waiting.
Set it on a wire rack, not a cutting board, not a towel, a rack so air gets under it too. Let it go a full hour minimum. I know that's brutal when the house smells like this. Richard has learned to just stay out of the kitchen during that hour because I hover and it drives him up the wall.
Reading the crumb once you cut it
When you finally slice it, here's what you're checking. You want to see an open, irregular pattern of holes, some big, some small, not a tight uniform crumb like sandwich bread from the store. The crumb should look a little shiny or moist without being wet or gummy. Press on it. If your finger leaves a mark and the bread springs back some, that's a good sign.
Now, here's my honest opinion, and it's a little contrarian from what you'll see all over the internet: a lot of people chase that big, wide-open, lacy crumb like it's the whole goal, and they push their ferment longer and longer trying to get there. I'd rather you pull the loaf a hair underfermented than push it past the point where the crumb goes slack and gummy. A slightly tighter crumb that slices clean beats a beautiful, airy crumb that falls apart when you try to make a sandwich out of it. That's just me. You can chase the Instagram crumb once you've got a hundred loaves under your belt. For now I want you eating bread, not photographing a science project.
A note on measuring instead of eyeballing
This whole approach, checking numbers instead of trusting my gut, is honestly just how my brain works. I spent forty years reading load charts and tolerances before I ever touched a starter, and converting a bread recipe into baker's percentages felt completely natural to me, like a load calc with wetter numbers. I actually did the conversion once on the back of a lumber takeoff sheet sitting in my truck between job sites, because I didn't have anything else to write on. Richard found it weeks later going through the truck and asked me, dead serious, if the deck project had turned into some kind of dough situation. I still laugh about that. But that's the mindset I want you borrowing here. Don't guess. Weigh it, measure it, check the number. It takes the guesswork out of the one moment where guessing costs you the whole loaf.
One caution worth saying plainly: that loaf coming out of a 450-degree oven is genuinely hot, the Dutch oven or the bowl and sheet pan both hold heat a long time after you pull them, and the steam that escapes when you take the lid off can burn you fast. Use real oven mitts, not a thin towel, and give the whole setup a minute before you go moving it around.
Before next time
Bake your loaf, check it with the thermometer instead of just eyeballing it, and let it sit the full hour before you cut in, even though you won't want to. Next time we'll talk about what to do when a loaf doesn't turn out the way you hoped, because it happens to everybody, including me, more than you'd think.