1 c. Tequila
1/2 c. triple sec
2 c. liquid Margarita mix (Mr. and Mrs. T. preferred)
1 oz. Rose's lime juice
1 tray ice cubes
Combine in blender. (If you don't serve the whole batch, store in freezer. Next time, thaw only partially and re-mix in blender for frozen margaritas.)
If desired, dip rims of serving glasses into the margarita mixture in blender, then into margarita salt. Then fill glasses with margaritas.