*Mix together 5 ounces of lime juice, 3 ounces of sugar and 10 ounces of water. This will make more than you need for one margarita, but it can be your base.
**Spread several cascabel chiles on a baking sheet. Bake at 350 for 10 minutes. Let chiles cool, pull out stems and seeds, place chiles in a blender. Pulverize. Mix equal parts pulverized chile and coarse kosher salt.
Pour all contents into margarita shaker, fill with ice, shake vigorously for 15 seconds, strain into Cascabel salt-rimmed glass filled with fresh ice. Garnish with a wedge of lime.