Science and flavor
Starch thickening
JA: でんぷんのとろみづけ(でんぷんのとろみづけ)
Starch thickening is the process of using starch to increase the viscosity of a liquid.
What it means in a kitchen
In a kitchen, starch thickening is commonly achieved by mixing starch with a cold liquid to form a slurry before adding it to a hot liquid. A typical ratio is 1 tablespoon of cornstarch mixed with 2 tablespoons of water for thickening 1 cup of sauce, heated to a simmer for 2-3 minutes until the desired thickness is reached.
Common misunderstanding
Beginners often add starch directly to hot liquids without creating a slurry first, which can lead to clumping and uneven thickening.
Example
When preparing a gravy, mix cornstarch with water to create a slurry, then stir it into the simmering liquid to achieve the desired thickness.