Preheat the oven to the hottest temperature, normally 240C.
Lightly coat the wings in the seasoned flour, shaking off the excess. Set the wings skin down on a rack in a foil-lined roasting tin, so the heat can circulate. Place in the oven for 25 mins, then turn the wings to be skin side up and roast for another 25 mins. Whilst cooking, make the sauce.
In a large pan, gently soften the onions and garlic until starting to golden. Add the coriander seeds, chilli powder, sugar, cinnamon, cloves to the onions and cook for a minute.
Add the cocoa powder, peanut butter, chicken stock, tomatoes and raisins, simmer for 20 mins until reduced.
When the wings are cooked through, add to the sauce to coat. Serve with a sprinkle of sesame seeds.