Combine. Mix salt and tequila together in a bowl until all the salt is wet. 

Dry. Spread into a thin layer on a parchment-lined baking sheet and let dry on the counter overnight. 

Store. Seal in a jar and store at room temperature for up to 6 months. 

For variations. Combine lime zest or rosemary with the salt and tequila in step one. Dry overnight and store for up to 6 months.