Back in Austin, Trudy's has an epic drink called the Mexican Martini. Epic enough such that there's a relatively strict 2/person limit. Luckily, there are multiple Trudy's in town...

Juice of 2 limes
2 oz mezcal
1 oz tequila
1 oz cointreau
1/2 oz cachaca

Serve in a margarita or cocktail glass, rimmed lightly with salt.