typically Caucasian face; Western-looking face
Slang term used in Japanese pop culture to describe a face with features perceived as Western or Caucasian, often contrasted with しょうゆ顔 (soy-sauce face) for more typically Japanese features. Used in casual conversation and media.
See also: しょうゆ顔
He has a Western-looking face, so he's often mistaken for being half-Japanese.
最近のアイドルはソース顔の子が人気だね。
These days, idols with Western-looking faces are popular, aren't they?
From ソース (sauce, referring to Western-style sauces like Worcestershire) + 顔 (face). The term contrasts with しょうゆ顔 (soy-sauce face), using condiments to metaphorically distinguish facial feature types. The exact origin is uncertain but likely emerged in Japanese media or fashion discourse.