What Are Leeks and How Do You Cook With Them? (2024)

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Peel back its layers and learn about this cousin to the onion.

By

Melanie Fincher

What Are Leeks and How Do You Cook With Them? (1)

Melanie Fincher is a Birmingham, Alabama–based food writer who covers everything from cooking techniques to gadget reviews. She has nearly 7 years experience writing news and lifestyle content.

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Updated on August 20, 2021

What Are Leeks and How Do You Cook With Them? (2)

What Are Leeks and What Do They Taste Like?

A member of the Allium family, leeks are a bulbous vegetable with a white base that transitions from light green to dark green at the top. Only the tender white portion is eaten. Some mistake this portion as the stem or stalk, but it is actually a cylindrical bundle of leaf sheaths.

Leeks have a mildly sweet flavor that is reminiscent of other alliums, such as onions, shallots, garlic, and chives. They are often used the way onions are — as part of a base of flavors for soups, stews, and other long-cooking dishes. However, their more mild flavor means they can be enjoyed on their own as well.

How to Pick Leeks

Because you'll be using only the white and light green parts for cooking, look for leeks with plenty of white coming up from the root. Smaller leaks tend to be more flavorful.

How to Prepare Leeks

What Are Leeks and How Do You Cook With Them? (3)

How to Cut Leeks

  1. Cut off the root and the tough green leaves at the top.
  2. Cut the leek in half lengthwise.
  3. If you're not cooking whole leeks, go ahead and lay them cut-side-down and cut them into half moons.

How to Wash Leeks

Leeks hold a lot of dirt between their sheaths, so cleaning them is extra important. You can do so one of three ways:

  1. Use a colander: Place the whole or sliced leeks into a colander and rinse with running water, using your hands to toss them until all dirt and debris are gone. Blot dry with a paper towel.
  2. Soak: Soak leeks in cold water for about 30 minutes, repeating until there is no dirt in the water.
  3. Use a salad spinner: Fill a salad spinner with sliced leeks and rinse with cold water. Spin the leeks in the salad spinner until dry.

The 13 Best Salad Spinners, Tested by Allrecipes

How to Cook With Leeks

Braised, steamed, sautéed, poached, or pureed, a sturdy-looking leek cooks down to velvety sweetness. French leek and potato soup is a favorite dish in which leeks and potatoes are pureed in a cream-based soup. You can also add sliced likes to a creamy dip to add onion-like flavor without overwhelming the dip. Try roasting them whole and serving alongside meats or eggs. Or don't cook them at all! Sliced leeks make a crunchy, fibrous topping for soups and salads.

How to Store Leeks

Leeks can keep for months when stored in a root cellar, or up to two weeks when loosely wrapped in plastic and kept in the fridge. Don't wash or trim them until you're ready to use, as this can help prevent their odor from being absorbed by neighboring foods.

Leeks Nutrition

Leeks are low in calories, much like green onions, and boast a number of health benefits:

  • They're rich in flavonoids, which are antioxidants with inflammatory, anti-diabetic, and anticancer properties.
  • They're a good source of vitamin K, which may help reduce the risk of osteoporosis, in addition to aiding in blood clotting for wounds and supporting heart health.
  • They're high in fiber, which helps promote regularity and a healthy digestive system.

Leek vs. Green Onions

Green onions are the best substitute for leeks, however, they're still quite different. Unlike leeks which tenderize while cooking, green onions can become slimy under high heat. Green onions have a much pungent flavor than leeks, which is why they are generally added to dishes after cooking to add freshness and crunch.

More Leek Recipes

Find recipe inspiration for cooking with leeks.

What Are Leeks and How Do You Cook With Them? (4)

  • Lemon and Herb Risotto Cake
  • French Leek Pie
  • Anaheim Fish Tacos
  • Vichyssoise
  • Potato Leek Soup III
  • Colcannon

Related:

  • 5 Ways to Cook with Leeks
  • Scallions vs. Green Onions: What's the Difference?
  • Browse our entire collection of Leek Recipes.

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What Are Leeks and How Do You Cook With Them? (2024)

FAQs

What does leek taste like? ›

Leeks taste like a mild version of an onion, with the same base flavor but far less intensity. They are delicate and sweeter than other members of its cultivar group. Traditionally, the white part and light green middle are eaten, while the green tops are often discarded.

How do you use leeks in cooking? ›

Fold sautéed leeks into an omelet or scrambled eggs, or add them to a veggie frittata. They're also wonderful in the Leek & Radish Green Tart on page 181 of Love & Lemons Every Day. In stuffing. There's something about leeks' sweet, oniony flavor that I just adore in Thanksgiving stuffing.

What part of a leek do you eat? ›

Mostly just the white and light green parts are eaten, though the darker green parts have plenty of flavor and can either be cooked longer to tenderize them, or used when making homemade soup stock.

Do leeks taste different from onions? ›

Leeks look like overgrown green onions, but have a milder, more delicate flavor than onions.

When should you not eat leeks? ›

Avoid leeks with cuts or bruises. The dark green tops of leeks should look fresh. Avoid leeks with yellowing or wilting tops. Choose smaller, younger leeks when you want to eat them uncooked.

Are leeks healthy for you? ›

Leeks are a nutritious and delicious vegetable that can provide many health benefits. They are high in vitamins, minerals, fibre, and antioxidants, making them a great choice for anyone looking to improve their health. So why not try adding some leeks to your next meal and enjoy the many benefits they have to offer!

Why don't you eat the green part of leeks? ›

We traditionally trim the green tops off leeks and throw them away, but the thick leaves are perfectly edible and have just as much if not more flavour than the milder, pale end. Often referred to as a super food, leeks are high in flavonoids, vitamins A, E and K, and fibre.

What flavors do leeks go well with? ›

Leeks in particular have a wonderful flavor that is quite mild which makes them lovely to pair with simple veggies in the spring like asparagus and peas, and heartier veggies in the fall like winter squash and potatoes.

What meat goes well with leeks? ›

Meat: Leeks pair well with meats such as bacon, ham, and sausage. Seafood: Leeks are a great addition to seafood dishes such as mussels, scallops, and salmon. Herbs: Fresh herbs such as thyme, rosemary, parsley, and chives complement the flavour of leeks.

Is any part of a leek poisonous? ›

Interesting Tidbits: POISONOUS PARTS: All parts but causes only low toxicity if eaten; can be safely eaten in small amounts, large quantities not recommended.

How to tell if leeks are bad? ›

Good leeks should feel firm and look healthy from root to tip. The stems should be white—we eat the tender white parts, so the longer the better—with no dark or soft spots. The dark green parts should be very dark with no yellowing or brown spots. Avoid anything that's limp, wilted, or starting to shrivel.

How do the French eat leeks? ›

While the French use them all over the place, from the “French Women Don't Get Fat” soup to potato-leek soup to leek-and-whatever quiche and leek-and-whatever omelettes and leeks with vinaigrette and leeks gratin, I had them once in a restaurant here in France without any fuss, really just leeks, and they were awesome.

Why are leeks so expensive? ›

Leek is an expensive crop to grow, because it is labor intensive. Hand labor is required for all stages of production including: transplanting, weeding, harvesting, washing and packing.

What tastes similar to leeks? ›

Leeks can look a bit intimidating at first glance. Like shallots, onions, and scallions, are in the allium family. All of these vegetables taste slightly similar and can be described as having a pleasantly pungent flavor.

Are leeks healthier than green onions? ›

In terms of what's good for you, both leeks and green onions have tons of vitamins and nutrients, but overall, leeks are more nutrient dense, with more fiber, and much more of manganese, Vitamin K, Beta Carotene & Iron.

Is leek a good substitute for onion? ›

Due to their high sugar content, they caramelize well, making them perfect for roasting or sautéing. As a general rule of thumb substitute one large leek with one medium onion in any recipe.

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