Head to head
Cayenne vs Jalapeño
A cayenne is several times hotter, far thinner and made for drying; a jalapeño is a fresh vegetable. They barely overlap in use.
| Cayenne | Jalapeño | |
|---|---|---|
| Heat (SHU) | 30,000–50,000 | 2,500–8,000 |
| Species | C. annuum | C. annuum |
| Origin | French Guiana | Mexico |
| Ripe colour | Red | Red |
| Wall thickness | Thin | Thick |
| Days to maturity | 70 | 70 |
| Flavour | bright, sharp, clean heat, slightly smoky | bright, grassy, slightly sweet, crisp heat |
Figures from each variety's own record. Heat is a range because heat is a range — see the Scoville scale for why.
The difference
These two are rarely alternatives to each other in a recipe, but they are constantly compared because they are the two chillies most British kitchens actually have. The jalapeño is thick, blunt and used fresh. The cayenne is long, slender and thin-walled, and almost everything it is good for involves drying it first.
That thinness is the whole story. Thin walls give up their moisture quickly and evenly, so a cayenne dries on a string in a warm kitchen without going mouldy — which is why this shape dominates the world's dried-chilli trade and why cayenne powder is on every spice rack. A jalapeño's thick walls make ordinary drying impractical, which is exactly why the tradition for preserving them is smoking, and why chipotle exists.
Worth knowing that cayenne is more a category than a variety. Most powder sold under the name is a blend standardised for heat and colour rather than grown as a single cultivar, which is why it tastes fairly anonymous. Grow one and grind it yourself and the difference is startling.
Can you substitute one for the other?
Rarely sensible. Cayenne in place of jalapeño gives heat without body — no flesh to stuff, slice or pickle. Jalapeño in place of cayenne gives body without heat, and will not dry. Choose by what the dish needs the pepper to do, not by heat.
Other comparisons
Or put any two varieties side by side in the compare tool.