1 cup water
about 4 oz Cointreau
4 tablespoons agave syrup
a splash or two of orange flower water
a splash of orange juice
tequila to taste (about 5-6 ounces will do the trick)
Mix all liquid ingredients in a pitcher and add a handful of ice. Salt each glass by running a lime around the rim and dipping the edge of the glass into the salt. Add a few more ice cubes to each glass and pour the key-lime margarita mixture over the ice. Garnish with a lime.