Source: Jimmy Buffett's Margaritaville Restaurants

Crushed ice
3 wedges lime
2 ounces gold tequila (Cuervo 1800)
1/2 ounce tequila (Cuervo white)
1 1/4 ounces Rose's Lime Juice
1/2 ounce triple sec (Bols)
1 splash orange Cura?o (Bols)

Put all ingredients except the 3 lime wedges into a shaker. Squeeze 2 of the lime wedges into the shaker. SHAKE WELL! Rim outside of glass only with lime. Salt only the outside of the glass. Add fresh crushed ice to glass. Strain mixture over ice. Squeeze remaining lime wedge in glass.