1/2 cup coarse salt
1/2 cup freshly squeezed lime juice (about 4 limes' worth), plus more for garnish
2 tablespoons freshly squeezed lemon juice (about 1 lemon)
1 cup triple sec
1 cup white tequila
1. Pour the salt onto a small plate. Rub the outside rim of each glass with the cut lime. Dip each glass into the reserved salt; set aside.
2. Place lime juice, lemon juice, triple sec, and 3 cups ice in a blender, and puree on low speed until completely blended. Add tequila and blend for 2 seconds. Pour margaritas into the reserved glasses, over ice, and serve immediately.
