Kohlrabi Health Benefits and Nutrition Facts

Kohlrabi health benefits mainly come from its measured nutrients, not evidence that this particular vegetable treats disease. It’s a practical choice if you want another crisp vegetable for snacks, slaw or cooked meals.

Despite its rounded appearance, the part most people eat is a swollen stem, not a root. Green and purple varieties are available. Both need the same basic kitchen decision: remove the tough outer layer and judge the flesh beneath it.

Kohlrabi nutrition facts

These USDA values describe raw kohlrabi. They don’t include the oil, sauce or other ingredients you may add during preparation. The serving calculation uses the record’s cup weight.

Source: USDA FoodData Central: Kohlrabi, raw (FDC ID 168424). % Daily Value (DV) uses FDA values for a 2,000-calorie diet.

A cup is a convenient comparison, not a required portion. If you’re weighing food, measure the edible portion you actually plan to eat. A large whole stem, its discarded peel and attached leaves shouldn’t all be logged as a cup of prepared kohlrabi.

USDA reports 3.6 g fiber and 62 mg vitamin C per 3.5 oz (100 g). The script scales those values to the serving and calculates Daily Values using FDA references. Food measurements are estimates, so the table’s rounded figures aren’t a promise about every plant.

Kohlrabi health benefits: which claims hold up?

The strongest case is straightforward: kohlrabi contributes fiber, vitamin C and potassium. There is no need to turn those nutrient contributions into a promise about a disease.

Helps you meet vitamin C needs Strong evidence

Raw kohlrabi provides substantial vitamin C. NIH ODS identifies vitamin C as necessary for collagen formation and normal immune function, and notes that it improves absorption of iron from plant foods.

A raw cup supplies most of the FDA Daily Value. That doesn’t mean it prevents colds or that eating more than you need provides extra immune protection. It means it is a useful vitamin C food within a varied diet.

Contributes fiber for normal bowel function Strong evidence

The 4.9 g fiber in a raw cup is a meaningful contribution. NIDDK recommends getting enough dietary fiber and increasing it gradually, with suitable fluids, to support bowel function.

The badge refers to dietary fiber’s established role. It isn’t a trial showing that kohlrabi alone resolves constipation. If you usually eat little fiber, a smaller portion may be more comfortable than suddenly adding a large raw bowl.

Provides potassium for normal nerve and muscle function Strong evidence

A raw cup supplies about 472 mg potassium, or 10% of the FDA Daily Value. NIH ODS describes potassium as necessary for normal cell function, including nerve transmission and muscle contraction.

That contribution doesn’t establish a special blood-pressure treatment from kohlrabi. If you have a prescribed potassium limit, use your clinician’s guidance rather than a general recommendation to eat more.

No kohlrabi-specific clinical trial is used here to claim weight loss, cancer protection or diabetes treatment. Our editorial policy distinguishes nutrient roles from benefits that require direct human research.

Who should be careful

For most readers, the practical issues are fiber tolerance, safe preparation and any existing food restrictions.

How to choose good kohlrabi

Choose firm, smooth stems that feel heavy for their size. For common garden varieties, younger, smaller stems are usually the easier starting point for tender raw preparations.

Iowa State recommends harvesting typical varieties when the swollen stem is about 2 to 3 inches (5 to 8 cm) across. Very large stems can become tough and woody. Some cultivars are bred for larger size, so the grower’s variety information matters too.

Look for sound skin without extensive damage. If leaves are attached, inspect them separately. Fresh-looking leaves are useful, but don’t buy an unsuitable stem just because the greens look attractive.

At a market, ask whether a variety is recommended for raw eating or cooking. Buy a small amount if it’s new to you. A vegetable you can prepare confidently is more useful than a large bargain that stays untouched.

How to peel and eat kohlrabi

Separate the leaves, wash the outside, and remove the tough outer layer to reach the tender flesh. Then cut it for the preparation you intend to make.

University of Minnesota suggests scrubbing the stem under running water before peeling. A thick skin may need a knife rather than an ordinary vegetable peeler. Use a stable cutting surface and trim a flat base if the shape rolls.

Cut a small piece to check the texture after peeling. If you still encounter a fibrous layer, trim a little deeper. Cooking can tenderize a vegetable, but it won’t make every woody part enjoyable.

For raw snacks and slaw

Cut thin slices or manageable sticks and pair them with a dip you like. For slaw, shred or finely slice the peeled flesh. Dress a small sample first so you can judge how much seasoning you need.

If you are tracking nutrients, account for the dip or dressing separately. The raw vegetable’s calorie figure doesn’t cover mayonnaise, oil, cheese or a sweetened sauce.

For cooked meals

Kohlrabi can be steamed, roasted, grilled or added to soups. Cut pieces to a similar size so they soften evenly. Check tenderness with a fork rather than relying on appearance alone.

For a simple meal, add it to a tray of vegetables or a soup you already know how to cook. Start with a small amount if you are unsure about the flavor. These are cooking suggestions, not tested recipes with calculated totals.

For the leaves

The leaves can be used like other cooking greens, according to University of Minnesota. Wash them separately and inspect them before cooking.

Don’t assume the stem’s nutrition table also describes the leaves. Different plant parts have different nutrient profiles. If you need a precise food log, use an appropriate entry rather than counting everything as the same food.

How to store kohlrabi

Remove the leafy tops and refrigerate the stems. University sources recommend cold storage, with perforated plastic bags as a useful way to limit drying.

Iowa State gives a refrigerator guideline of up to three weeks for sound harvested kohlrabi. The condition at purchase and your storage setup affect that result. Check it before use rather than treating the date as a guarantee.

Keep cut pieces covered in the refrigerator and plan meals around using them. Prepare only what you need if you want the best raw texture. Avoid leaving a washed, cut vegetable on the counter while organizing the rest of the week.

Kohlrabi vs turnip: which should you use?

They can fill similar roles in a mixed vegetable dish, but they are different foods. Kohlrabi is a swollen stem; a turnip’s main edible rounded portion is a root.

Don’t choose solely because the vegetables look alike or because one is described as healthier. Pick for taste, texture, availability and the meal you’re making. Use our food nutrition lookup to check the selected vegetable and serving.

How to prepare and cook kohlrabi

Choose small to medium kohlrabi bulbs, about the size of a tennis ball, that feel heavy and firm; very large bulbs can be woody. Cut off the stems and leaves, then peel away the tough outer skin with a knife or sturdy peeler. Raw kohlrabi is crisp and mildly sweet, like a cross between broccoli stem and apple, and is great sliced into salads or grated into slaw. To roast it, cut it into cubes, toss with a little oil and salt, and roast at 425°F (220°C) for 25 to 30 minutes until golden. The leaves are edible too and can be cooked like kale. Store bulbs in the fridge for up to a week.

Kohlrabi FAQ