Strawberry Rhubarb Topping

6 c cut up rhubarb
1 1/2 c sugar
1 small pkg strawberry Jell-O
2 c water
1 t red food coloring, if desired
3 T minute tapioca

Cook all ingredients except tapioca for about 20 minutes.  Add tapioca and let boil 2-3 minutes.  Eat warm or cold, plain or with ice cream.