Cranberry Coulis for Cranberry Semolina Pudding

Place cranberries, sugar, orange zest, and 3/4 cup water in a small saucepan. Set over medium heat, and bring to a boil. Reduce heat to a simmer; cook until cranberries have popped, about 12 minutes. Pass coulis through a sieve, and discard solids. Chill until serving.