Close the lid and cook for 4 to 6 minutes or until the bottom is golden brown. Flip the fougasse and brush with seasoned oil. Sprinkle with fleur de sel. Continue cooking for 4 to 6 minutes, or until the dough is thoroughly cooked. If needed, move the fougasse around on the grill to cook more uniformly. Flip the fougasse onto a board and brush with the remaining seasoned oil.