- 1 cup sugar
- 3/4 cup water
- 1/4 cup lime juice, plus rind from 1 lime
- 6 to 8 drops green food coloring
- 4 cups ice
- 1 liter club soda or seltzer
- 4 lime slices, for garnish
In a small pot on medium heat dissolve sugar in water. Raise the heat, add the lime rind and bring to a boil. Lower the heat to a simmer and cook until slightly reduced. Remove from heat and discard the lime rinds. Stir in the food coloring and cool.
Fill 4 glasses with ice and distribute the lime syrup and lime juice, to taste, into each glass. Top with seltzer and stir. Garnish with lime slices.