Rasp, Five-Hole or Channel Knife: The Best Lemon Zester

Zest is where the smell of a lemon lives. The oil sits in the thin colored layer of the peel, while the white pith just under it is bitter. A good zester takes the first and leaves the second. It is a small tool, but in a kitchen that goes through limes, lemons and oranges, it comes out of the drawer more often than you might expect.

The hard part is that “zester” can mean three different tools. A rasp makes fine shreds, a five-hole zester makes thin strands, and a channel knife cuts a long strip for a twist. This guide is about choosing among them for citrus, with the best tool in each style. For a closer look at rasps for cheese and spices, go to our guide to the best microplane grater.

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Quick verdict: which lemon zester to buy

Rasp, strands or strips: five zesters compared

Five standouts, one for each job, with details as each maker or listing states them. All eight tools are covered in full below.

Our picks for the best lemon zester

How to choose a citrus zester

Start with what the zest is for

If it needs to disappear into a batter, a dressing, a crema or a marinade, you want a rasp. If it sits on top of a dish or steeps in a syrup, strands work better. If it goes on the rim of a drink, you want a channel knife. Many cooks end up with two tools, a rasp and something for strips.

Check how sharp it is, not how big

A dull zester tears the peel and digs into the pith. In its channel knife test, Cook’s Country judged tools by how long and even their ribbons were, and how comfortable they were to grip and steer. Those are good tests for any zester. A sharp blade should need little pressure.

Think about the handle

Your hands will be wet and slippery with citrus oil. Look for a grippy handle, and consider a sealed one if water inside a handle bothers you. Cook’s Country had a mix of hand sizes and dominant hands try its tools, a good reminder that comfort differs from one cook to the next.

Look at the cleanup

Zest sticks to the underside of a rasp, and dried zest is harder to remove. Rinse right after use, and use a small brush on the underside, as Microplane suggests. The Joseph Joseph has a built-in wiper for this. Check the care line too, because Mercer wants its tool washed by hand while most others here can go in the dishwasher.

Do you need it, or a peeler?

If you mainly want wide strips of peel for a drink or a pot of something, a sharp vegetable peeler already does this, and our guide to the best vegetable peeler covers those. Scrape any pith off the back with a knife. Buy a zester when you want finer or more even results.

How we picked these eight zesters

We sorted tools by what they produce, then looked for the identifiable makers in each style, with stock on Amazon when we wrote this. We read each listing and looked for independent testing. The Cook’s Country channel knife review is the strongest evidence we found, and it backs the Victorinox directly. For the other picks, we found no comparable test, so they rest on maker and listing details, and we say so on each one. We did not use these tools ourselves. Deiss is the only Amazon-first brand here. A brand search of the federal recall database turned up no recall for these tools.

Lemon zester questions, answered

What is the difference between a zester and a rasp?

A classic zester has a row of small holes and makes thin strands. A rasp is a long, flat blade with many tiny teeth, and it makes fine, fluffy shreds. Many people now call a rasp a zester, which is where the confusion starts.

What is a channel knife for?

It cuts one long strip of peel, usually for a cocktail twist or to score fruit before slicing. It does not produce fine zest. Cook’s Country’s winner was the Victorinox.

How do you zest a lemon without the bitter pith?

Use light pressure and move on as soon as you see white. A sharp tool helps here, since it should need little pressure. Wash and dry the fruit first, and zest it before you juice it, as a whole fruit is much simpler to hold.

Can a citrus zester also grate cheese?

A rasp can. Microplane and Deiss both list hard cheese. Strand zesters and channel knives cannot. See the best rotary cheese grater if cheese is the main job.

Does it work on limes and oranges too?

Yes, all of these work across citrus, and Cook’s Country tested with lemons, limes and oranges. A lime’s smaller curve is less forgiving on a wide blade, so a narrower tool suits it better.

The zester we would reach for first

Buy the Microplane if you cook and bake with zest, and add the Victorinox if you also make drinks. If you only want one tool, the OXO is a sensible middle ground. Once the zest is off, the rest of the fruit is still useful, and our guide to the best citrus juicer covers the next step. For drinks, the best cocktail tool set and our margarita accessories guide pick up from there.