I love taco seasoning on popcorn. A packet of Bearitos brand last me a
while. It's more than just chili powder. You can buy it in
packets. Since it contains chili powder, I store unused portions in
the refrigerator. I once read that chili, cayenne, etc are better off
in the refrigerator than on the shelf.
Here's the ingredient list:
dehydrated onion, spices (including chili peppers and paprika), salt,
corn meal, garlic, autolyzed yeast extract.