A "shrub" is a drinking vinegar or sipping vinegar. You can take it by the tablespoon or by the "shot" if you wish. Our favorite way to reap the benefits of the shrub is to mix it in sparkling water to make a sweet/tart beverage that is quite enjoyable. It can be also be used to make a vinaigrette, or substitute in any recipe you would use vinegar.
You will get the same health benefits from a drinking vinegar as you would from the syrup.