Rescues · TO SIMMER
Rice came out gummy and mushy.
Why it happens
Too much water, or a boil where a simmer should have been. Absorption rice counts on a measured ratio under a closed lid; extra water and hard agitation scrub loose starch off the grains and cook it into paste. Rinsing the raw rice until the water runs clear removes most of that starch before it can turn to glue.
Recovering it
A cloudy stock cannot be made clear by straining alone, though a slow strain through cloth helps and chilling lets the fat lift off in a solid cap. Broken sauces come back by whisking into fresh emulsifier off the heat. A thin starch sauce is easily fixed — bring it to a proper boil, which is the step that was skipped. Fish that has broken up is a texture loss, not a flavour loss; it becomes a soup or a fishcake.
The mechanism
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 TO SIMMER lesson — how to tell, where to practise it, what it carries to.