How to Cook Kohlrabi: Every Method Explained

Despite its alien-like appearance with protruding stems and globular shape, kohlrabi is one of the most versatile and forgiving vegetables in the kitchen. If you have ever wondered what does kohlrabi taste like, imagine a crisper, sweeter cross between a broccoli stem and a mild turnip, with none of the sharp bitterness found in older radishes. Learning how to cook kohlrabi opens up dozens of culinary possibilities, from velvety purées and crispy fries to caramelized sheet-pan roasts.

Whether you pulled a fresh bunch from the garden or picked one up at the farmers market, this guide walks you through every reliable culinary technique. Here is everything you need to know about how to cook kohlrabi vegetable globes and greens to perfection.

Prep First: Peeling and Cutting

Before you apply heat, you must know how to prepare kohlrabi for cooking. The outermost layer of a kohlrabi bulb contains tough, fibrous vascular bundles that will not soften, no matter how long you boil or roast them. As horticulture experts at the University of Illinois Extension note, kohlrabi bulbs develop a woody outer rind as they mature, meaning proper trimming is essential for tender texture.

To prep the bulb properly:

1. Trim the stems: Slice off the top stems and leaves flush with the globe (save the greens for later). Slice a 1/2-inch (1.3 cm) slab off the top and bottom of the bulb to create a stable, flat base.
2. Peel deeply: Set the bulb flat on a cutting board. Using a sharp chef’s knife, slice downward along the natural curve of the bulb from top to bottom, removing the fibrous skin and the tough white layer directly beneath it. A standard vegetable peeler rarely cuts deep enough; you want to see the juicy, translucent inner flesh.
3. Cut to shape: For roasting or boiling, cut the bulb into 3/4-inch (2 cm) cubes. For quick sautés and slaws, slice it into 1/4-inch (6 mm) matchsticks (julienne). For chips or gratin dishes, use a mandoline to cut thin 1/8-inch (3 mm) rounds.

For a detailed visual walkthrough of this step, see our complete guide on how to peel and prepare kohlrabi.

Roasting

Roasting is widely considered the premier method for anyone new to cooking kohlrabi. High-heat dry cooking draws out the vegetable’s natural sugars, transforming its mild brassica bite into a nutty, caramelized side dish.

To make classic roasted kohlrabi, preheat your oven to 425°F (218°C). Toss 3/4-inch (2 cm) cubes with 1 to 2 tablespoons of extra-virgin olive oil, 1/2 teaspoon of kosher salt, and freshly cracked black pepper. Spread the cubes in a single layer across a heavy rimmed baking sheet, leaving enough space between them so they roast rather than steam.

Roast for 25 to 35 minutes, tossing halfway through. The kohlrabi is ready when the edges are deep golden brown and the centers are fork-tender. Finish with a squeeze of fresh lemon juice or a shower of finely grated Parmesan cheese right out of the oven.

Sautéing and Stir-Frying

If you need a fast weeknight side dish, sautéing delivers crisp-tender kohlrabi in under 15 minutes. The key is cutting the vegetable into thinner batons or thin slices so heat penetrates quickly without scorching.

For a simple skillet side of sautéed kohlrabi, heat a tablespoon of butter and a tablespoon of olive oil in a wide skillet over medium-high heat. Add sliced kohlrabi, season with salt, and cook undisturbed for 3 to 4 minutes to achieve initial browning. Stir and continue cooking for another 4 to 6 minutes, adding minced garlic or fresh thyme during the final minute of cooking.

When incorporating the vegetable into a high-heat wok dish, like a vibrant kohlrabi stir-fry, cut the bulb into matchsticks. Kohlrabi holds its crunch exceptionally well alongside bell peppers, snap peas, and ginger in soy- or sesame-based sauces.

Steaming

Steaming is the gentlest way to cook kohlrabi, preserving its delicate flavor, pale color, and impressive nutrient profile. According to nutritional data from USDA FoodData Central, raw kohlrabi is exceptionally rich in vitamin C, providing more than 100% of the recommended daily value per 100-gram serving; quick steaming preserves far more of these heat-sensitive nutrients than prolonged boiling.

To steam:

1. Place a steamer basket inside a saucepan with 1 inch (2.5 cm) of water, ensuring the water does not touch the base of the basket.
2. Bring the water to a rolling boil over high heat.
3. Add 1/2-inch (1.3 cm) cubes or slices of kohlrabi to the basket, cover tightly with a lid, and reduce the heat to medium.
4. Steam for 8 to 12 minutes, depending on thickness, until easily pierced with the tip of a paring knife.

Toss steamed kohlrabi with softened unsalted butter, flaked sea salt, and minced fresh dill or chives.

Boiling and Simmering

Boiling softens the dense cell walls of kohlrabi, making it an excellent technique when preparing bases for purees or building layered comfort food. Drop 1-inch (2.5 cm) chunks into a pot of generously salted boiling water and cook for 15 to 20 minutes until completely soft.

Boiled kohlrabi shines brightest when blended into a silky kohlrabi soup with leeks, vegetable broth, and a splash of heavy cream. Alternatively, you can parboil thinly sliced rounds for 3 minutes before layering them with Gruyère and cream for a decadent kohlrabi gratin.

Mashing

Because kohlrabi contains significantly fewer carbohydrates and starches than russet potatoes, it serves as an outstanding vegetable mash. However, because it contains higher water content, it requires a slightly different approach than traditional spuds.

To make velvety mashed kohlrabi:

1. Boil or steam peeled cubes until very tender (about 15 to 18 minutes).
2. Drain thoroughly in a colander, letting the steam escape for 3 to 5 minutes to remove excess surface moisture.
3. Return the chunks to the warm, dry pot and cook over low heat for 1 to 2 minutes to cook off residual water.
4. Purée in a food processor with softened butter, a splash of heavy cream or cream cheese, salt, pepper, and a pinch of ground nutmeg. For a firmer body, blend kohlrabi 50/50 with boiled Yukon Gold potatoes or cauliflower.

Frying and Air-Frying

Kohlrabi makes an incredible low-starch substitute for traditional french fries. When sliced into sticks, it crisps up nicely around the edges while remaining tender inside.

For oven-baked or deep-fried kohlrabi fries, cut the bulb into 1/3-inch (8 mm) batons. Tossing the batons in a light coating of cornstarch or arrowroot powder before adding oil and seasonings ensures a crispier crust.

If you have a convection countertop appliance, making air fryer kohlrabi is even faster. Preheat your air fryer to 390°F (199°C). Toss seasoned kohlrabi batons with avocado oil, place them in the air fryer basket in an even layer (cook in batches if necessary), and air-fry for 12 to 16 minutes, shaking the basket halfway through cooking.

Grilling

Grilling imparts a smoky char that balances kohlrabi’s mild sweetness. Cut trimmed, peeled bulbs into thick 1/2-inch (1.3 cm) slabs or wedges so they do not slip through the grill grates.

Brush both sides generously with high-smoke-point oil (such as canola or avocado oil) and season with salt and smoked paprika. Grill over direct medium heat (about 375°F to 400°F / 190°C to 204°C) for 5 to 7 minutes per side, keeping the grill lid closed between flips. Move the slabs to indirect heat if the outside is charring before the center softens.

Eating It Raw

Although this guide focuses on heat-based cooking, no discussion of kohlrabi is complete without mentioning raw applications. Kohlrabi requires no cooking at all to taste delicious.

Thinly sliced into rounds on a mandoline, raw kohlrabi can be layered into carpaccio with shaved radishes, olive oil, and sea salt. Shredded on a box grater, it serves as a crisp, non-soggy alternative to cabbage in summer slaws paired with a bright apple cider vinaigrette. Cut into sturdy sticks, it is a crunchy dipping vessel for hummus, ranch, or guacamole.

Cooking the Leaves

Never discard the foliage attached to your kohlrabi globes. The greens are completely edible and taste remarkably similar to collard greens or lacinato kale.

To cook kohlrabi leaves:

1. Strip the leafy greens away from the tough, fibrous center ribs.
2. Wash thoroughly in cold water to remove garden grit, then chop coarsely.
3. Heat 1 tablespoon of olive oil in a skillet over medium heat.
4. Add sliced garlic and a pinch of red pepper flakes, cooking for 30 seconds until fragrant.
5. Add the damp greens by the handful, tossing until wilted (about 4 to 6 minutes). Finish with a small pinch of coarse salt and a squeeze of fresh lemon juice.

Kohlrabi Cooking Times at a Glance

Cooking Method	Typical Cut Size	Cooking Temp	Time	Indicator of Doneness
Roasting	3/4-inch (2 cm) cubes	425°F (218°C)	25–35 min	Caramelized edges, knife pierces easily
Sautéing	1/4-inch (6 mm) slices/matchsticks	Medium-high	8–10 min	Tender-crisp with light brown patches
Steaming	1/2-inch (1.3 cm) cubes	Medium-high (covered)	8–12 min	Fork-tender throughout, vibrant color
Boiling	1-inch (2.5 cm) chunks	Rolling boil	15–20 min	Completely soft, yields easily to a fork
Air-Frying	1/3-inch (8 mm) batons	390°F (199°C)	12–16 min	Crispy edges, golden-brown skin
Grilling	1/2-inch (1.3 cm) planks	Medium heat (375°F / 190°C)	10–14 min	Prominent grill marks, tender center

What to Serve with Kohlrabi

Because kohlrabi has a balanced flavor profile, it pairs seamlessly with a wide range of proteins and seasonings:

• Rich Meats: The vegetable cuts through the richness of seared pork chops, roasted duck, bratwurst, and braised beef short ribs.
• Fish & Poultry: Steamed or puréed kohlrabi creates a light, elegant bed for pan-seared salmon, cod, or roasted chicken thighs.
• Herbs & Dairy: Kohlrabi welcomes fresh dill, parsley, tarragon, chives, butter, heavy cream, Gruyère, and goat cheese.
• Acids: Finish any cooked kohlrabi dish with lemon juice, whole-grain mustard, or apple cider vinegar to lift its natural sweetness.

For full meal inspiration and curated recipe ideas, explore our collection of the best kohlrabi recipes.

Frequently Asked Questions

How do you cook kohlrabi without peeling it?

You should generally avoid cooking kohlrabi without peeling it. While very young, golf-ball-sized spring kohlrabi may have a thin, tender skin, standard grocery store and market bulbs have a fibrous, woody outer layer that remains tough and unpleasant to chew even after prolonged cooking. Always trim away the skin down to the pale inner flesh.

Can you overcook kohlrabi?

Yes. If boiled or steamed too long, kohlrabi absorbs excess water, becomes mushy, and can take on an overly pungent, sulfurous cabbage aroma. Aim for a “fork-tender” texture where a fork slides into the flesh with slight resistance, rather than collapsing completely.

Does purple kohlrabi cook differently than green kohlrabi?

No. Purple kohlrabi and green kohlrabi taste virtually identical and cook at the exact same rates. Keep in mind that the purple pigment resides only in the outer peel; once you peel the bulb for cooking, the interior flesh of both varieties is the same creamy, pale white-green color.

How do you cook kohlrabi for picky eaters?

The best way to introduce kohlrabi to reluctant eaters is by roasting it at high heat with olive oil, garlic powder, and grated parmesan, or cutting it into batons for air-fried fries. Roasting and frying brown the exterior, turning the flavor sweet and nutty while masking any brassica undertones.