Heat the sugar and water in a saucepan until it reaches a syrupy consistency, stirring frequently.
Remove from heat and let stand until cool.
MARGARITAS
In a blender, combine syrup, tequila, lime juice, liqueur and water with ice. Process until the desired consistency. Pour into salt-rimmed margarita glasses and garnish with lime slices.
Notes
Make ahead tip: Make the syrup the night before and let it get nice and chilled in the refrigerator.