Capture the vibrant, complex flavor of rhubarb with this simple Rhubarb Coulis recipe. This smooth, sweet-tart sauce is perfect for elevating your favorite desserts.
In a large pot, combine the rhubarb, granulated sugar, water, and orange zest. Cook over medium-low heat, stirring frequently, until the rhubarb has broken down, 5 to 7 minutes.
Let the rhubarb mixture sit until cooled slightly, about 15 minutes.
Transfer the mixture to a blender. Blend on low speed with the lid slightly ajar to let any steam escape, until puréed. The coulis should be a pourable consistency; if needed, add in additional water or fresh orange juice to thin.
Transfer to a jar, let cool completely, then cover and store in the refrigerator until ready to use.