One of my favorite company “go to” meals in the summer is duck breasts on the grill. I purchase the frozen (fat on) breasts of duck at Curtis Meats or other quality purveyor and simply defrost them overnight in the fridge. I trim the fat but leave a generous pad in the center to protect the meat, which I score. This helps keep the meat moist. I love duck rather rare and generously salted and peppered. Otherwise, leave it alone and focus on the show stopping rhubarb sauce, flavored with lemon and star anise.
While my rhubarb is in its prime, I make plenty of this sauce, which cans nicely, so it may be enjoyed year round. I have noticed that I get better visual results if I make the pieces of rhubarb slightly larger, maybe 2 inches long rather then one.