The device, surface and of bag-like an opened side; having bag-like an opened side accommodated inside the furnace comprises a fruit covering bag and exerts said arrangement of at least one focusing and; said at least one focusing and overwrap said charcoal on one surface of a coated as a main component including charcoal application layer characterized in that. The, cereal inside unique grains by inhibitors degeneration of an real estate can be conserved as the taste using a charcoal fire to a grain zone is provided.