When it goes wrong · Simmer
Rice is still crunchy in the middle.
Can you save it?
Reviewed for this symptom
Add a few spoonfuls of water, cover tightly and give it ten more minutes on the lowest heat, then rest five minutes off the heat before fluffing. It is fully recoverable.
How to confirm the diagnosis
Observable cues, not inferred user state
- Chalky centres with cooked outsides
- The pot ran dry before the time was up
- The heat was high
Not this?
- Stock is cloudy and greasy.
- Fish or dumplings fell apart.
- A cream or egg sauce split.
- A cornstarch-thickened sauce stayed thin and tasted chalky.
- Rice came out gummy and mushy.
- The rice burnt and stuck to the bottom of the pot.
What actually happened
Only this symptom
Not enough water or not enough time — the outside of each grain gelatinised and sealed before the centre could hydrate. High heat makes it worse by boiling the water away before it is absorbed. Add a few spoonfuls of water, cover tightly, and give it ten more minutes on the lowest heat.
The full mechanism
Shared by every simmer failure
Water boils at 100°C and cannot get hotter at normal pressure, so a rolling boil is not hotter than a simmer by more than a few degrees — around 85-96°C against 100°C. The difference is not temperature but agitation. A boil is thousands of collapsing bubbles delivering mechanical energy, which shreds fish, clouds a stock by emulsifying fat and driving protein scum back into suspension, and breaks the emulsions in cream sauces. A simmer delivers the same heat without the turbulence. This is why almost everything long-cooked wants a simmer: the extra few degrees buy almost nothing and the agitation costs a great deal. The exceptions are when you specifically want that energy — reducing fast, or gelatinising starch in a slurry, which genuinely needs to reach a boil to thicken fully.
The full Simmer lesson — how to tell, where to practise it, what it carries to.
Next time
Prevent this specific failure
Measure the water, keep the lid on, use the lowest heat, and let it rest before opening.
What right looks like
Shared by every simmer failure
- Bubbles rise lazily from one or two points on the base and break gently at the surface — not a rolling motion across the whole pan.
- The surface trembles more than it moves.
- A stock stays clear. Cloudiness is the reliable sign it has been boiling, not simmering.
- Adjusting to a true low simmer usually means a lower flame than feels right, and often a lid set slightly ajar.