Ingredients

• 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

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Instructions

1. Watch how to make this recipe.
2. 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.
3. 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.