Red pepper and chile pepper powder make this Margarita almost too hot to handle.
Coat the rim of a rocks glass with salt, fill with ice and set aside.
In a shaker, muddle the agave nectar or simple syrup, red pepper flakes and chile powder.
Add the remaining ingredients, fill with ice and shake vigorously.
Strain through a tea strainer into the prepared glass.
Garnish with a jalapeño or red chile pepper.