Table 3.

Comparison of costs between real cases and planned menus

Menu		Contents	Cost (¥)
A	Real case	curry doughnut	110
	Planned menu	curry doughnut, milk with long shelf-life, and orange jelly	315
B	Real case	salmon rice ball, egg, ham and tuna sandwich, and vegetable juice	568
	Planned menu	salmon rice ball, ham and cheese sandwich, and vegetable juice	570
C	Real case	salted plum rice ball, simmered kelp rice ball, fried egg, fried chicken, potato croquette, simmered hijiki, and pickled radish	242
	Planned menu	white rice, laver, fried egg, grilled mackerel, potato croquette, cabbage, potato salad, boiled beans, pickled radish, and vegetable juice	410
D	Real case	preprocessed rice ball (wakame seaweed), instant miso soup, packaged tofu, and soy sauce	379
	Planned menu	chicken meatball soup, preprocessed white rice, packaged tofu, soy sauce, and bottled green tea	601
E	Real case	bamboo shoots rice, carrot stir-fry, meatball, cabbage stir-fry, and picked ginger	263
	Planned menu	bamboo shoots rice, chicken and vegetable miso soup, and bottled green tea	318