PROBLEM TO BE SOLVED: To enhance credibility of a consumer to a commodity, and to enable a consumer to select a commodity safely.SOLUTION: Purchase food products (5a1, 5b1, 5c1, 5d1) purchased by a central kitchen and purchase goods (5a2, 5b2, 5c2, 5d2) purchased from the central kitchen are displayed in each display food product 10 (10a, 10b, 10c, 10d) displayed in a show case of a restaurant.SELECTED DRAWING: Figure 1