We examined the effect of the color and decoration of a small dish for soy sauce as the simple food-dish system by using the color palette on a personal computer. The picture of a white dish (φ10cm) containing soy sauce (7ml) was captured by a digital camera, and the color of the dish was varied by using Adobe Photoshop. The dish on the screen was painted all over or only on the edge in 8 kinds of hue with different degrees of lightness (a total of 40 kinds of color). A panel of women students from the department of food science and nutritional health of Kyoto Prefectural University assessed the effect of each color and decoration.
Questionnaire studies had shown that they had fixed images of square dishes colored blue or green for sashimi and sushi, and round dishes colored white for gyoza (dumpling stuffed with minced pork). However, when examined on the screen in more detail, the preferred colors for small dishes were found to be very different from these fixed images. The results obtained will be useful for the color design of dishes.

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