Troubleshooting
Troubleshooting Gummy Crumb
Why your bread feels wet inside, and how to bake, proof, and structure your way out of it.
Gummy crumb is a common, fixable problem. It comes from one of a few causes — usually some combination.
What gummy crumb is
Dense, sticky, hard to slice, undercooked-looking interior. Heavy mouthfeel. Lacks open structure.
Causes and fixes
1. Underbaking
The most common cause. Aim for an internal temperature of 205–210°F (96–99°C). Use a thermometer. Add 10–15 minutes if needed. Look for a deep golden-brown crust and a hollow thump on the bottom.
2. Too much steam, too long
Steam in the first 15 minutes, then remove it. Open the oven door. The crust needs to set and harden so moisture can escape.
3. Improper proofing
Over-proofed dough collapses; under-proofed is dense and tight. Use the poke test: a finger indent should spring back slowly. Track timing carefully.
4. Weak gluten
Under-mixed dough, poor folding, weak flour, weak starter. Fix with proper autolyse, 4–6 sets of folds during bulk, the windowpane test, strong bread flour, and a peak-active starter.
5. Hydration outpacing skill
High hydration is hard. Drop to 70–75% until you've mastered the basics.
Advanced troubleshooting
Old or weak flour — Check protein (12–14% ideal). Use fresh.
Oven temperature off — Verify with an oven thermometer. Use a baking stone or steel. Allow full preheating.
Weak starter — Build activity for several days before baking. Use it at peak (doubled, bubbly).
Better baking technique
- Start hot (450–475°F) for oven spring
- Reduce to 425°F after steam removal
- Hold heat until done — internal temperature decides
- Cool fully (2–4 hours) before cutting; crumb continues firming
Prevention
Reduce hydration, use stronger flour, more active starter, better timing notes, and consistent environmental control.
Systematic approach
Change one variable at a time. Record everything. Be patient — results take a few bakes to evaluate.