What can I use if I don’t have a lemon zester?
Option 2: If you don’t have a zester… Take your vegetable peeler or paring knife and cut a strip of yellow skin off of the lemon. The peeler should easily grab just the zest, but you’ll need to be a little more precise with the knife. If needed, you can use a knife to scrape off any pith on the strip of lemon.