Now I live in cattle country and am no stranger to Rocky Mountain Oysters, otherwise known as calf fries or, when we order them at our local dive bar, just "nuts." Done right, they're delicious. But I can honestly say I've never had duck nuts, or turkey fries for that matter, which show up on menus from time to time. I imagine they're just fine, and, in the hands of the cooks at Hinterland, I bet they're damn good. I actually regret not trying them, but there was just no room in my stomach for dessert of duck testes.