먹는 것을

eating

→ 먹다
phrase Rare #26,077
eating 먹는 것 nominalizes the verb 먹다 (to eat), meaning “eating” or, depending on context, “what one eats.” 를 marks it as the object of the sentence.
KO: 건강을 위해 채소를 먹는 것을 좋아해요.
EN: I like eating vegetables for my health.

먹는 것을 가려요.

I'm not picky about what I eat.