Duck & Blueberry-Thyme Pan Sauce with Caramelized Onion Mashed Potatoes

#blueberries    #mashed potatoes    #duck breast    #asparagus    #duck breasts    #watermelon radish    #potatoes    #salted butter    #shallot    #radish    #caramelized onions    #blueberry sauce    #pan sauce    #white cheddar    #butter    #worcestershire sauce    #worcestershire    #cheddar    #cheese    #onion powder    #blueberry bourbon spread    #paprika    #garlic powder    #smoked paprika