In this pork tenderloin recipe, rhubarb cooks with ketchup and cider vinegar to make a tangy, healthy barbecue sauce. If you're lucky enough to have a lot of rhubarb, make a double or even a triple batch of the rhubarb sauce recipe and freeze it for later in the summer. It tastes great with grilled chicken and beef too. Source: EatingWell Magazine, May/June 2014
                                  