I was REALLY surprised to learn that chili powder is a spice blend. I guess I thought it was just ground peppers.
It is actually a mixture of Paprika, ancho, cumin, oregano, garlic, and possibly other peppers.
3 ancho chiles, stemmed, seeded and sliced
3 cascabel chiles, stemmed, seeded and sliced
3 dried arbol chiles, stemmed, seeded and sliced
2 tablespoons whole cumin seeds
2 tablespoons garlic powder
1 tablespoon dried oregano
1 teaspoon smoked paprika
I typically don't like spice mixes, but this one is good to have on hand, and like most things, is ALOT better if you make it. I JUST used ancho powder and paprika as far as mine goes and is GOOD.
I buy ancho peppers dried (available in a big plastic bag almost anywhere) and grind them up myself.
In addition to chili powder, it is a must for barbecue sauce, spice rubs, even coffee.