01 -
Stir together the tapioca starch and water until smooth with no lumps remaining. Add the sliced rhubarb, strawberries, maple syrup, and zest to the pan and combine thoroughly.
02 -
Bring the mixture to a boil, stirring frequently. Reduce heat and simmer on low for a few minutes until the rhubarb is just tender and sauce has thickened.
03 -
Remove from heat and stir in the optional orange or lemon juice. Adjust sweetness with additional maple syrup or honey if needed.
04 -
Serve warm over ice cream or allow to cool completely. Cover and refrigerate until ready to use.