When it goes wrong · Bake
A cake rose and then sank in the middle.
Can you save it?
Reviewed for this symptom
It will not rise again, but it is edible. If the centre is still raw, return it covered with foil until a skewer comes out with moist crumbs; if it is baked but sunken, level the top, fill the dip with cream or fruit, or turn it into a trifle.
How to confirm the diagnosis
Observable cues, not inferred user state
- A dip in the middle with a raised rim
- The door was opened early, or it came out early
- The recipe's leavening was measured by a heaped spoon
Not this?
- Dark crust, raw centre.
- Dense and heavy with a tight crumb.
- Uneven — one side darker every time.
- Cookies spread flat into one thin sheet.
- The cheesecake cracked across the top.
What actually happened
Only this symptom
The structure expanded before the proteins set, then collapsed — from opening the door early, too much leavening, or removing it before the centre had set.
The full mechanism
Shared by every bake failure
In baking, heat is setting a structure rather than cooking something already formed. Several changes happen at once and in order. Gases expand and steam forms, inflating whatever the batter or dough has trapped — most of a cake's rise happens in the first minutes and is oven spring, not leavening acting later. Starch gelatinises from around 60°C, absorbing water and swelling. Egg and gluten proteins coagulate from roughly 70°C and lock the expanded structure in place. Only above about 150°C does the surface brown. Opening the door early drops the temperature and can collapse a structure that has expanded but not yet set — that is the real reason the warning exists, not superstition. Sugar, dairy and egg all brown fast, which is why enriched doughs bake cooler than lean ones.
The full Bake lesson — how to tell, where to practise it, what it carries to.
Next time
Prevent this specific failure
Keep the door shut for the first two-thirds of the bake, measure the leavening, and test the centre with a skewer before pulling it.
What right looks like
Shared by every bake failure
- A skewer comes out with moist crumbs rather than wet batter — clean and dry usually means slightly overdone.
- The centre springs back when pressed and no longer holds a dent.
- Bread sounds hollow tapped underneath, and reads about 96°C internally if you would rather measure than guess.
- The edges pull very slightly away from the tin, which happens as the structure sets and contracts.