noun
kidney bean; haricot bean
Refers to the common bean (Phaseolus vulgaris), especially the kidney bean variety. Often used in cooking contexts. Cross-referenced with インゲンマメ, which is a more common term.
See also: インゲンマメ
菜豆は煮込み料理によく使われる。
Kidney beans are often used in stews.
このサラダには菜豆が入っている。
This salad contains kidney beans.
インゲンマメ is the more common and general term for the common bean, while 菜豆 is a less frequent synonym often used in specific culinary or agricultural contexts.
The kanji 菜 (vegetable) and 豆 (bean) directly describe the plant. The reading さいとう is likely a combination of the on'yomi of 菜 and a variant reading of 豆, though the exact derivation is uncertain.