daikon - ダイコン or 大根 (現在残念ながら英語のみの説明になります)

Daikon is a white radish commonly used in Japanese cuisine. It can measure up to 40 cm long and has a very mild taste. They are often boiled or served as pickles.

Daikon sometimes grow with a pair of pointed ends looking like legs. In the Japanese tradition, this female shape is a sexual and fertility symbol. Mice or rats are often paired with a daikon to underline the fertility symbol as they are prolific animals.

http://ja.wikipedia.org/wiki/%E3%83%80%E3%82%A4%E3%82%B3%E3%83%B3