Having made many, many margaritas according to all sorts of proportional directives, I have finally determined (for my own tastes, at least) that the very best margaritas are concocted as follows:
Ingredients
1 ½oz.tequila100% agave a must, preferably a reposado
1 ½oz.triple sec or Cointreau
1 to 1 ¼oz.lime juice
Salt for the rim of the glass
Instructions
Shake all the ingredients with cracked ice in a cocktail shaker until the exterior frosts. Strain into a glass over rocks, or “up” into a cocktail glass. A slice of lime as a garnish, while not strictly necessary, is a civilized touch.