Combine the water and sugar in a saucepan and bring the mixture to a boil over high heat. Boil the liquid 3 minutes. Remove the pan from the heat and stir in the lemon juice and rind. Refrigerate for at least one hour or until very cold. Strain the mixture into a storage container. When you want some lemonade, place 5-6 ice cubes in a drinking glass. Fill the glass about 1/3 full with the lemon syrup, add water or seltzer (or liquid of choice) to the top of the glass, stir and drink.

Note: You may make a pitcher full of lemonade instead of serving the beverage individually. Place the cooled, strained syrup in a pitcher half filled with ice cubes. Add water or club soda to the top. You may garnish the beverage with sliced lemons and/or mint sprigs.