The best chili powder ever was from an Albuquerque supermarket in a cello bag off the rack of Mexican spices. Where the Mexicans shop. I make that point because it was FRESH. Up here next to Viking land you have no idea how many decades ago the peppers were ground. One reason I'm glad SD is accepting more refugees.
I keep a small coffee grinder for grinding spices. I tried grinding some hot little dried chilis from the garden exactly once. DO NOT attempt at home without a gas mask and protective suit. Or you'll regret it the rest of the evening.
