noun, noun or participle which takes 'suru', intransitive verb
simple diet; plain food; frugal meal
Refers to eating simple, unadorned food, often with a nuance of frugality or abstemiousness. Can be used as a noun or with する to mean 'to eat simply'.
彼は健康のために粗食を心がけている。
He makes a point of eating simple food for his health.
粗食に慣
Once you get used to plain food, rich meals feel heavy.