Rhubarb Slush
["3 c. chopped fresh or frozen rhubarb", "1 c. water", "1/3 c. sugar", "1 c. apple juice", "1 (6 oz.) can frozen pink lemonade concentrate, thawed", "1 (2 liter) bottle lemon-lime soda"]
["In a saucepan, combine rhubarb, water and sugar; bring to boil.", "Reduce heat.", "Cover and simmer for 5 minutes or until rhubarb is tender.", "Cool for about 30 minutes."]
["frozen rhubarb", "water", "sugar", "apple juice", "lemon-lime soda"]