Grand Gold Frozen Margarita
My personal favorite!   I made many of these as a bartender in my younger days.
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1 and 1/4 ounces Cuervo Gold Tequila (or other gold tequila)
3/4 ounce Grand Marnier liqueur
1 ounce Sweet and Sour Mix
several ice cubes  (enough to fill a cup)
​cut limes
  1. If desired, place coarse sea salt or Kosher salt on a small saucer.  Moisten rim of glass with a cut lime.  Twirl the rim in the salt. 
  2. Combine all ingredients in a blender and blend until smooth.
  3. Pour into the glass and garnish with a lime.