What's the difference between chiles de árbol and other dried chiles?
Chiles de árbol are thin, bright red, and pack consistent heat (65,000–70,000 Scoville units). They're less smoky than chipotles and less fruity than guajillos, making them ideal for a clean, spicy salsa.
Can I make this without a molcajete?
Yes. A blender or food processor works, but the texture will be smoother and less rustic. A molcajete produces a chunkier, more textured salsa that preserves the ingredients' individual character.
How long should I roast the tomatoes and chiles?
Roast tomatoes and onion on a comal or skillet over medium-high heat for 3–5 minutes per side until blistered and softened. Toast dried chiles for 30 seconds per side until fragrant, then rehydrate briefly in warm water.
Is this salsa spicy?
Yes. With 6–8 chiles de árbol, this salsa is moderately to very spicy. Reduce to 3–4 chiles or remove the seeds for less heat.
How long does roasted chile de árbol salsa keep?
Store in an airtight container in the refrigerator for up to 5 days. It does not freeze well due to the watery tomato base.