Braised beef rib on grill with potato parmentier and sweet potato puree (1kg. Approx.)

Cut of beef of approximately one kilo of weight, with bone. Delicious rib cooked at a low temperature for 46 hours to make it very tender. It is finished preparing on the charcoal grill. It is accompanied with its demi-glace, creamy potato, and mashed roasted sweet potatoes.