In a medium bowl, whisk together the lime zest, salt, both chili powders and granulated sugar until evenly distributed.
3 tablespoons lime zest, 2 ½ tablespoons coarse salt, 2 tablespoons ancho chili powder, 1 tablespoon chipotle chili powder, 1 tablespoon granulated sugar
Use immediately or store in an airtight container for up to one month. Shake before using in case of settling.
Notes
Storage: Use immediately or store in an airtight container for up to one month. For a longer-lasting spice blend, you can substitute crystallized lime powder for the lime zest, or dry the lime zest in the oven at the lowest temperature for 1-2 hours. Spice notes: It is somewhat spicy but could be spicier or less depending on how you like it. You can add more sugar to balance if desired. To make it milder, use mild chili powders.