Heat ADJUST TO TASTE GROUND

Cayenne Pepper Capsicum annuum

Almost pure heat with very little flavour behind it. Use it to adjust a dish, not to season one.

Ingredient reference image: AI-generated. Recipe photography is my own.

WHAT IT IS

Ground dried cayenne chilies — long, thin, red peppers named after the capital of French Guiana. Typically 30,000 to 50,000 Scoville units, roughly ten times a jalapeño.

TASTING NOTES

Sharp, clean heat with a slight sourness and not much else. Unlike paprika or ancho, cayenne contributes almost no fruit, smoke or sweetness.

NOT PAPRIKA

They look nearly identical in the jar and are wildly different in the pan. A tablespoon of paprika seasons a goulash; a tablespoon of cayenne makes it inedible.

BUYING & STORING

Should be bright orange-red. Brown cayenne is old and its heat dulls unevenly as it ages, which makes measuring unreliable.

SUBSTITUTIONS

Red pepper flakes at about double the volume, ground fine if you want them to disappear. Any pure ground hot chili, adjusted for its Scoville rating.

In the kitchen

It is a seasoning, not a base

Cayenne's job is to adjust heat at the end, the way you adjust salt. Building a dish on it gives you something hot and hollow, because there is no flavour underneath the capsaicin.

Add in pinches, off the heat

It dissolves and spreads fast, and it keeps developing for a minute or two after it goes in. Add a pinch, wait, taste, repeat. Going too far cannot be reversed except by making more of everything else.

Dairy and fat, not water

If a dish or a mouth has gone too hot, capsaicin is fat-soluble and not water-soluble. Yoghurt, cream, milk or a spoon of butter will pull it back. A glass of water spreads it around.

Beyond the kitchen

PEPPER SPRAY AND DETERRENTS

Concentrated capsaicin from cayenne-type chilies is the active component of defensive sprays and of agricultural deterrents for deer and rodents. It is also added to some birdseed, which deters squirrels and not birds.

MARINE ANTIFOULING

Capsaicin has been trialled and used as a non-toxic antifouling agent on boat hulls, deterring barnacles and mussels without the heavy metals in conventional paints.

THE SCOVILLE PANEL

Until chromatography replaced it, heat was measured by diluting a chili extract in sugar water until a panel of five tasters could no longer detect it. The number of dilutions became the Scoville rating — a genuinely subjective unit that is still the industry standard.

THE NAME IS A PORT

Cayenne is the capital of French Guiana, and the pepper carries the name of the port it was shipped through rather than anywhere it particularly originates. Most cayenne today is grown in India, East Africa and Mexico.

A longer history

Cayenne-type chilies were domesticated in Central and South America and were in use for thousands of years before European contact. The variety took its European name from the port of Cayenne in French Guiana, a labelling convention that says more about colonial shipping than about the plant's origins.

After the Columbian exchange, hot chilies spread faster and more completely than almost any other New World crop. Portuguese traders carried them to West Africa, India and Southeast Asia within decades, and they were absorbed into local cooking so thoroughly that within a couple of generations few people thought of them as foreign at all.

Ground cayenne became the standard Anglophone way to add pure heat to a dish, and it holds that position still — in Cajun and Creole cooking, in British and American spice racks, and in the commercial food industry, where it is a cheap and reliable way to adjust heat without altering anything else about a formula.