For the orange sauce, place all ingredients into a small saucepan and stir to dissolve the sugar. Heat over a medium heat until the sauce comes to a simmer. Reduce heat to low and simmer for 20 minutes until the sauce is glossy and coats the back of a spoon. Add the honey and leave aside to cool.
Preheat the oven to 180°C/350°F. Salt the scored duck fat generously, place fat side down in a cold skillet over a medium to high heat with no oil and let the duck fat render until crispy. Once crispy (after 5 or so minutes), flip over and fry for 1 minute before finishing, placing the pan in the oven to continue cooking for 3-5 minutes or until cooked to your liking. Remove the duck from the heat and leave aside to rest before slicing.
Brush pancakes lightly with a blend of the sesame oil and vegetable oil before lightly charring on a Square Skillet Grill.
Serve pancakes filled with sliced duck, blanched asparagus spears, radish, citrus segments and micro herbs with a drizzle of the orange sauce.