Prepare the Kamado BONO grill for direct cooking by lighting the charcoal with a lighter and placing the stainless steel grates. Wait until the temperature rises to 200°C.
Adjust the top and bottom air vents to maintain a stable temperature.
Place a pan on the grates and pour in some oil.
Finely chop the onion and garlic, then sauté them in the oil. Set the sautéed onions and garlic aside. In the same pan, with a few tablespoons of oil, fry the potatoes until golden. Cook them, turning occasionally, for about 10 minutes directly over the coals with rosemary sprigs, seasoning with salt. Remove the rosemary, add the onions and garlic, mix well, and continue cooking INDIRECTLY with a deflector in a closed grill at 180°C for about 20 minutes.
In another pan, melt the raclette cheese.
Place the potatoes in a large bowl, pour the melted cheese over the top, and generously sprinkle with chopped chives. Enjoy!