2 oz. citric acid
2 gal. water
6 c. sugar (I use less)
2 lg. cans orange juice, unsweetened
2 lg. cans pineapple juice, unsweetened

Boil 1/2 gallon of water with sugar and citric acid for about 1 minute. Add remaining water and let stand overnight (24 hours). Add juice and store. Will keep several weeks, also freezes well. Yield 3 1/2 gallons.