Combine rhubarb, sugar, and vinegar in a medium pot.
Heat mixture over medium, stirring constantly, until sugar dissolves.
Continue cooking until rhubarb starts to breakdown and fall apart, stirring frequently.
Remove from heat, then allow mixture to cool for 5 to 10 minutes.
Place fine mesh strainer over a medium bowl, then add rhubarb mixture. Stir the mixture as it strains, and gently press on pulp with a spoon, to remove as much liquid as possible.
Transfer shrub to an airtight container, then chill until ready to use. Enjoy!
Notes
Servings - This recipe make about 1 ½ cups syrup, which is equal to 12 servings (2 tablespoons each). The amount of syrup you get may very slightly, depending on how much juice the rhubarb releases.Leftover Rhubarb - Don't throw out the pulp that's left after straining the shrub. It makes a wonderful tart-sweet "jam" that can be spread on toast or bagels or used as a topping for yogurt or ice cream. You could even pair it with goat cheese and crackers for a unique snack.Using - Mix two to three tablespoons of the syrup (to taste) with sparkling water to create a simple, by delicious drink. You can also use it to make this wonderful Rhubarb Shrub Cocktail!More - Check out the info more this recipe card for helpful tips, step by step photos, variations, other serving suggestions, and more!