Make your own chili powder

Steps

1. Preheat oven to 250f.
2. Remove and discard stems and seeds of chiles.
3. Place chiles on a baking tray/sheet pan and bake for 10-15 minutes to dry them out further. They should be more brittle and less pliable.
4. Remove from oven and cool. Working in batches if necessary, place extra-dried chiles into a grinder and pulse to a fine powder.
5. Store in an airtight container and use as needed.