When it goes wrong · Bake
Uneven — one side darker every time.
Can you save it?
Reviewed for this symptom
Rotate the tin now, and if one side is already dark, shield it with a strip of foil for the rest of the bake. The result will be uneven in colour, not in texture.
How to confirm the diagnosis
Observable cues, not inferred user state
- The same side darkens on every bake
- Nothing changed in the recipe
- The oven has a visible hot side by thermometer
Not this?
- A cake rose and then sank in the middle.
- Dark crust, raw centre.
- Dense and heavy with a tight crumb.
- Cookies spread flat into one thin sheet.
- The cheesecake cracked across the top.
What actually happened
Only this symptom
The oven, not the recipe. Domestic ovens vary by 20°C or more across the cavity; rotate halfway and use a separate oven thermometer.
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
Rotate halfway through every bake, use an oven thermometer to find the hot spot, and bake in the centre of the middle shelf.
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.