red pepper flakes

Also known as: crushed red pepper, crushed red pepper flakes, red cayenne pepper, red pepper

Dried, crushed red chile peppers, often a blend of varieties, sprinkled onto a finished dish or bloomed briefly in oil for a quick, direct shot of heat. Unlike a smooth ground chile powder, the coarse flakes deliver heat unevenly -- one bite can land next to a seed with a sharp, concentrated punch.

Buying guidance

Heat level varies significantly by brand and blend since there's no strict standard for what goes into red pepper flakes -- start with less than usual the first time with a new jar, then adjust. A fresh jar looks bright brick-red; faded, dull orange-brown flakes have lost both heat and aroma.

Substitutions

Crushed dried chile of a single named variety, like chile de arbol or Aleppo pepper -- more distinct flavor, and the heat level will differ from a generic blend.
Ground cayenne pepper -- similar heat family in a fine powder rather than flakes; use less, since it's more concentrated.
A dash of hot sauce -- adds heat and some acidity but no texture, and adds a little extra liquid.

Tips & common mistakes

Sprinkling red pepper flakes straight onto a finished dish gives sharp, isolated bursts of heat wherever a flake or seed lands, while blooming them briefly in warm oil first mellows and spreads the heat more evenly through what's cooking -- worth doing deliberately rather than only adding flakes at the table.

Storage

Because they're coarser than a finely ground chile powder, red pepper flakes have less surface area exposed to air and tend to hold their heat a bit longer in storage -- but they're still happier in a dark cabinet than a rack beside the stove, where heat and light speed the fade.

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