Lemon skin (for flavouring) (4)

I believe the answer is:

zest

(Other definitions for zest that I've seen before include "taste" , "Great energy, piquancy" , "Vigour" , "Great energy; citrus peel" , "Keen excitement - citrus peel" .)

I've seen this clue in The Guardian.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.