picky eating; fussy eating
Rare term for being particular about food; more common words are 偏食 (へんしょく) or 好き嫌い (すききらい).
菜好み is an old-fashioned expression for having strong likes and dislikes in food.
A compound of 菜 in its older sense of a side dish or food eaten with rice, and 好み “preference,” hence selective or fussy eating.