This invention inhibits the occurrence of flavor degradation in a food/beverage, including teas, in a transparent container due to light irradiation from sunlight, fluorescent lamps, and so forth. A food/beverage in a transparent container, in which the food and/or beverage, including teas, fills a transparent container which effectively blocks light in a wavelength range from 550 nm to 720 nm. Preferred examples of foods and beverages are ice cream products, beverages, and so forth. Less 2-heptenol, 2-octenol and 1-octen-3-one, which are oxidation marker components, is generated, and the occurrence of flavor degradation is inhibited.本發明係關於含茶類之透明容器裝之飲食品,抑制因太陽光、螢光燈等之光照射所發生的異味。將含茶類之飲食品,填充於實質上遮住550nm~720nm之波長範圍的光之透明容器而成之透明容器裝之飲食品。飲食品之較佳例係冰淇淋類、飲料等。可減低作為氧化指標成分之2-庚烯醛、2-辛烯醛及1-辛烯-3-酮之各生成量,且抑制異味的發生。