【the KarukanManjyuu in summer / the Karukan in winter】
　The most representative souvenir for Kagoshima tourism is the Karukan. It is a traditional sweets that was born in Kagoshima. It made from full of the yam and sugar. The Karukanmanjyuu within bean jam is the mainstream out of Kagoshima Prefecture, but the Karukan without bean jam is also eaten as same as the KarukanManjyuu in Kagoshima. Its shape is a square plank and it looks like a white sponge cake. When it is casted square, the part of edge occur to cut down. It is considered a waste, but it is tasty. The edge occur a little, so it is seldom found out at the Karukan shop. The shop sometimes put on sale or give as a gift for the Karukan. If you know the taste of an edge of the Karukan, You are a well-informed in Karukan.
　Generally both of the Karukan and the KarukanManjyuu are eaten all season. But a high rank shop recommand another one for gift every season. The Karukan is good in a winter, and the KarukanManjyuu is good for a summer. The reason is that the look of Karukan is different in a season.
　A manufacturer buy all yam as a materials in winter. In summer 6 month past from winter and temperature is high, so some yellow stain apper on the surface of the Karukan. It is of course harmless because of the natural color of the yam. But it is too remarkable for the gift because of the white shape. However they never use remarkable and don't refrigerat. They favorite the natural Karukan. Then they recommand the KarukanManjyuu in summer and recommand the Karukan in winter. I think that the yellow stains are remarkable because of the bean jam, and they do so.
　The look is important for gift, but no annex and no bleach is best for our health, isn't it?