I make this on Pesach when we always have fresh squeezed juice in the house.
½ cup sugar, or to taste
1 cup hot water
1 cup (fresh squeezed orange juice)
1 cup (fresh squeezed pink grapefruit juice)
½ cup (fresh squeezed lemon juice)
3 quarts cold water
Add sugar and hot water to a one gallon pitcher. Stir to disolve sugar.
Add juices and additional water. Stir to combine. Refrigerate till serving.