1 tablespoon ground coriander
1 tablespoon ground cumin
1 tablespoon garlic powder
1 tablespoon ground annatto seed
1 1/2 teaspoons ground turmeric
1 teaspoon ground black pepper
1 tablespoon kosher salt
1 1/2 teaspoons dried Mexican oregano

Combine all ingredients and mix well.
Store in an airtight container.