What does the cryptic crossword clue "Eat out: get Chinese (just a serving thereof) (4)" mean?

The definition is "Eat". The wordplay uses a hidden word. Hidden in "eat out: gET CHinese (just a serving thereof)" The answer is ETCH.

Eat out: get Chinese (just a serving thereof) (4)

Guardian Cryptic #29018 | 18 Across | 2023-03-15 flower