Vincenzi  Limoncello Italian Margarita

1 1/2 ounces tequila
1 ounce Vincenzi Limoncello di Torino
2 ounces margarita mix
Dip the rim of your glass into  the Limoncello  and then dipping it into sugar or salt. Simple but effective! 
Pour Limoncello, tequila, margarita mix in shaker and shake until cold
Pour in glass and garnished with a lemon or lime slice.