Gather ingredients. See full post for how to source well and get my links for best ingredients
Grab a large bowl (4-5 quart size) and a kitchen scale to make a big batch of this Mexican spice mix. (American measurements are provided, but a scale is recommended)
Mix ingredients until completely combined.
Store in a glass container (at least 1 quart size) in a cool, dark, dry place away from steam and heat. Use within 1 year for best flavor.