water yam; winged yam; purple yam
Refers to the plant Dioscorea alata, a type of yam. Often used in cooking; purple varieties are known as ube in Filipino cuisine.
ダイジョは沖縄料理でよく使われる。
Water yam is often used in Okinawan cuisine.
紫色のダイジョはスイーツに使われることが多い。
Purple yam is often used in sweets.
The Japanese name ダイジョ is likely derived from the Chinese name 大薯 (dàshǔ), literally 'big yam'.