Adapted from splendidtable.org
tablespoons freshly grated ginger
tablespoons freshly squeezed lemon juice, or to taste.
Combine the sugar, 2 tablespoons freshly grated ginger and the water in a medium saucepan and place over medium-high heat, stirring occasionally until the liquid is clear and there are no remaining grains of sugar. Let the syrup stand 10 minutes, then strain out the ginger. Cool the syrup and stir in about 5 tablespoons freshly squeezed lemon juice, or to taste.