Austin is also an experienced and accomplished home cook, as evidenced by this simple, yet surprisingly complex-flavored grilled duck recipe. I'm offering it as provided by Austin, but there is one thing I would like to note. First is the long marinade time. Both the coconut milk and the papaya juice contain enzymes that break down the duck's protein, maybe too much if you stretch into that 48-hour timeline. I think you could get away with an overnight soak and still get a very tender bird.