A nod to General Grant, this drink could easily have been a refreshment enjoyed by officers in the Union camps.
In a saucepan, combine sugar and 1 cup water. Bring to a boil and stir until sugar is dissolved.
Remove from heat and let cool.
In a pitcher, combine cooled syrup, lemon juice, and 4-5 cups cold water.
Serve over ice with lemon slices.