Ingredients
Tequila
Orange liqueur (recommended: Cointreau)
Freshly squeezed tangerine juice
Freshly squeezed lime juice
Ice cubes
Salt, optional

Method - The Procedure
Combine tequila, orange liqueur, tangerine juice, lime juice, and ice, all to taste, in a blender and blend until smooth. Line rims of glasses with salt, if desired. Divide margaritas among glasses, and serve. To serve margaritas straight up, combine all ingredients, except salt, in a shaker. Strain into glasses and serve.