Remove the skin from the garlic, cut in half, remove the seedling, cut into 1 mm cubes.
Bring oil to boil with water. Boil until water evaporates.
Gut fish, rinse, dry. Remove shell from shallots, dice, place in butter. Steam for about 3 minutes. Put chars in a plate, add shallots with juice and white wine. Cook in oven preheated to 200 degrees for 14 to 16 minutes. Baste every 2 minutes.
Skin fish, remove bones from fillets. Reduce fish stock. Season.
Lightly sauté prepared garlic in a small pan. Place one fillet on each plate. Sprinkle with diced shallots and garlic, season with salt and season with pepper. Top each with a lemon half.