I put plenty of mustard on the hot dog.
This recipe uses Western mustard.
Japanese mustard, typically hotter and used in Japanese cuisine, while 洋がらし is milder Western-style mustard.
Loanword for mustard, often used interchangeably with 洋がらし, but マスタード may sound more modern or refer to specific Western mustard products.
Common mixed kanji-kana spelling for Western mustard.
Alternate kanji spelling using 辛子 (mustard); less common.
Kanji spelling using 芥子 (mustard); less common but understood.
Compound of 洋 (Western) and がらし (mustard, from 芥子/辛子). The term distinguishes Western-style mustard from traditional Japanese mustard.