person. We like this drink because it is so refreshing." In saucepan, bring rhubarb and 4 cups water to a boil; reduce heat to medium and cook, stirring occasionally, for 10 minutes or until rhubarb is softened. In cheesecloth lined sieve set over bowl, strain rhubarb for at least 2 hours or overnight. Discard pulp. Stir sugar and orange and lemon juices into rhubarb juice. Transfer to pitcher and refrigerate. just before serving, add soda water. SERVES: 6 SOURCE: Heritage Recipe Contest, Canadian Living magazine for Canada's 125th birthday