One 6 oz family sized box of Jell-O Strawberry Artificially Flavored Gelatin Dessert Mix Jell-O Strawberry Artificially Flavored Gelatin Dessert Mix is a sweet treat on its own as well as a perfect ingredient for desserts To prepare add 2 cups boiling water to gelatin mix stir 2 minutes until completely dissolved stir in 2 cups cold water then refrigerate 4 hours or until firm.