6 cups water
1 1/3 cups granulated sugar
Grated zest of 3 lemons (no white pith)
1 1/3 cups freshly squeezed lemon juice
Bring 2 cups of the water to a boil. Pour over the sugar and the lemon zest and stir until dissolved. Add the remaining 4 cups of water and the lemon juice and stir to combine. Refrigerate until thoroughly chilled, about 2 hours, then serve over ice.
Makes 8 servings.
Note: You may strain the lemonade before serving to remove the zest if desired.