Kohlrabi vs Cabbage: Differences, Similarities, and When to Use Each

Kohlrabi and cabbage are both brassicas — members of the same plant species, Brassica oleracea — but they look nothing alike, taste quite different, and serve different roles in the kitchen. They’re as closely related as a Great Dane and a Chihuahua, and about as interchangeable.

Still, the comparison comes up constantly. People see kohlrabi at the farmers’ market and think “that looks like a cabbage on a stick.” Or they find kohlrabi in their CSA box and wonder if they can just use it like cabbage. Sometimes you can. Often you can’t.

Here’s a thorough comparison of the two, covering everything from biology to nutrition to practical cooking.

The Botanical Relationship

Kohlrabi and cabbage are both cultivars of Brassica oleracea, the wild mustard plant that has been selectively bred into an absurd number of vegetables. The full family tree includes:

• Cabbage (B. oleracea var. capitata) — bred for its tight head of leaves
• Kohlrabi (B. oleracea var. gongylodes) — bred for its swollen stem
• Broccoli (B. oleracea var. italica) — bred for its flower clusters
• Cauliflower (B. oleracea var. botrytis) — also bred for flowers
• Brussels sprouts (B. oleracea var. gemmifera) — bred for its axillary buds
• Kale (B. oleracea var. sabellica) — bred for its leaves

So when you’re comparing kohlrabi and cabbage, you’re comparing two vegetables that share the same wild ancestor but have been shaped by centuries of selective breeding to emphasize completely different parts of the plant.

For a broader comparison with other root-like vegetables, check out our kohlrabi vs turnip vs jicama guide.

Appearance: How They Look

Cabbage is a tight, round head of layered leaves. It grows close to the ground, and the edible part is entirely leaf tissue compressed into a dense ball. Green, red/purple, savoy (crinkled), and napa (elongated) are the main varieties.

Kohlrabi looks like a pale green or purple orb with stems and leaves shooting out at odd angles. The edible part is the swollen stem — technically not a root, not a bulb, but a thickened above-ground stem. It looks like a vegetable from a science fiction movie.

There is no visual way to confuse the two if they’re side by side. The confusion happens when people encounter kohlrabi for the first time and reach for the most familiar-looking reference. If you’re not sure what kohlrabi even is, our what is kohlrabi guide covers the basics.

Flavor Comparison

This is where the differences really matter in the kitchen.

Cabbage has a distinctly cruciferous, slightly sulfurous flavor — especially when cooked. Raw cabbage is peppery and sharp. Cooked cabbage softens and sweetens but develops that characteristic “cabbage smell” that some people love and others find off-putting. Red cabbage is slightly more bitter; savoy is milder; napa is the mildest.

Kohlrabi is milder, sweeter, and cleaner-tasting. Raw kohlrabi tastes like a cross between an apple and a broccoli stem — crisp, juicy, faintly sweet, with almost none of the sulfurous punch that cabbage has. Cooked kohlrabi becomes buttery and tender, more like a mild turnip than like cooked cabbage.

In short: Cabbage tastes like cabbage. Kohlrabi tastes like barely anything — in the best way. It’s neutral enough to absorb whatever flavors you add to it.

For a deeper dive into kohlrabi’s flavor, see our what does kohlrabi taste like guide.

Texture Comparison

Raw cabbage is crunchy but leafy. The crunch comes from the rib structure of the leaves, but the leaves themselves are thin and flexible. Shredded raw cabbage is the base of coleslaw for a reason — it has crunch but also a slight give.

Raw kohlrabi is dense, firm, and juicy — more like a water chestnut or jicama than like a leaf vegetable. It has a uniform crunch throughout, no rib-versus-leaf contrast. It’s sturdier as a crudité, holds up better in salads over time, and doesn’t wilt.

Cooked cabbage breaks down into soft, silky layers. It can be braised into near-translucency or charred into crispy edges.

Cooked kohlrabi softens into something more potato-like — dense, creamy, and starchy-feeling (even though it’s quite low in starch). It holds its shape better than cabbage when roasted or sautéed.

Nutritional Comparison

Here’s how they compare per 1 cup raw:

Nutrient	Kohlrabi (135g)	Green Cabbage (89g)
Calories	36	22
Total Carbs	8.4 g	5.2 g
Fiber	4.9 g	2.2 g
Net Carbs	3.5 g	3.0 g
Protein	2.3 g	1.1 g
Fat	0.1 g	0.1 g
Vitamin C	140% DV	54% DV
Potassium	473 mg	151 mg
Vitamin B6	10% DV	5% DV
Calcium	32 mg	36 mg
Folate	5% DV	10% DV

Key differences:

• Vitamin C: Kohlrabi has more than double the vitamin C of cabbage — 140% DV versus 54% DV per cup.
• Fiber: Kohlrabi has more than double the fiber (4.9g vs 2.2g per cup).
• Potassium: Kohlrabi has three times the potassium.
• Calories: Cabbage is lower in calories per cup, partly because a cup of shredded cabbage weighs less than a cup of diced kohlrabi.
• Net carbs: Nearly identical when comparing cup-for-cup.

Both are nutritional bargains. But if you’re optimizing for vitamin C, fiber, or potassium, kohlrabi wins.

For a complete nutritional breakdown, see our kohlrabi nutrition guide.

Growing: How They Differ in the Garden

Cabbage needs 70–120 days from transplant to harvest, depending on variety. It takes up a lot of space (18–24 inches between plants), needs consistent water, and is notoriously attractive to pests — cabbage worms, aphids, and slugs all love it.

Kohlrabi is faster and easier. Most varieties mature in 45–65 days, take up less space (6–8 inches between plants), and are somewhat less bothered by pests. It’s one of the most beginner-friendly brassicas.

Both are cool-season crops that do best in spring and fall. Both can handle light frost.

When to Substitute One for the Other

This is the practical question. Can you use kohlrabi where a recipe calls for cabbage, or vice versa?

Kohlrabi CAN replace cabbage in:

• Slaw/coleslaw — Shredded kohlrabi makes an excellent slaw, possibly better than cabbage because it stays crunchy longer and doesn’t weep water.
• Stir-fries — Sliced kohlrabi can replace cabbage in stir-fries. It holds its shape better and has a milder flavor.
• Fermented preparations — Kohlrabi can be fermented like sauerkraut. The result is milder and crunchier.
• Raw preparations — Kohlrabi works in any recipe that calls for raw cabbage.

Kohlrabi CANNOT replace cabbage in:

• Stuffed cabbage rolls — You need whole cabbage leaves to wrap around the filling. Kohlrabi doesn’t have leaves suitable for this.
• Braised cabbage dishes — Recipes that rely on cabbage’s ability to melt into soft, silky layers won’t work with kohlrabi. Kohlrabi stays firmer and doesn’t develop the same texture.
• Large-volume dishes — Cabbage is cheaper per pound and yields more volume. If you need to feed a crowd cheaply, cabbage is the more practical choice.

Cabbage CAN replace kohlrabi in:

• Slaws and salads — With a dressing that compensates for cabbage’s sharper flavor.
• Stir-fries — Cabbage is a perfectly fine stir-fry vegetable.

Cabbage CANNOT replace kohlrabi in:

• Fries, chips, or roasted preparations — Kohlrabi’s dense flesh can be cut into fries and chips that crisp up. Cabbage can’t do this.
• Mashed preparations — Mashed kohlrabi works like mashed potato. Mashed cabbage is… not a thing.
• Gratin — Kohlrabi’s uniform density makes beautiful, even gratin layers. Cabbage layers fall apart.
• Raw crudité — Kohlrabi sticks are sturdy dippers. Cabbage pieces are too floppy.

Price and Availability

Cabbage is available everywhere, year-round, at very low cost. It’s one of the cheapest vegetables per pound in most grocery stores — typically $0.50–$1.50 per pound.

Kohlrabi is less widely available. You’ll find it reliably at farmers’ markets, Asian grocery stores, and well-stocked supermarkets, especially in spring and fall. Price is typically $2–$4 per pound — roughly 2–3x the cost of cabbage.

If budget is the primary concern, cabbage wins. If flavor, nutrition density, and versatility matter more, kohlrabi justifies the premium.

Storage

Cabbage is a storage champion. A whole head keeps for 2–3 months in the crisper drawer — possibly the longest-lasting fresh vegetable you can buy.

Kohlrabi keeps for 2–4 weeks in the fridge, which is good but nowhere near cabbage’s endurance. Once cut, use within 3–5 days.

Both can be frozen (blanched first) for longer storage. Cabbage freezes adequately for cooked dishes. Kohlrabi freezes well but loses its raw crunch.

The Bottom Line

Kohlrabi and cabbage share a species name and a produce aisle, but they’re fundamentally different vegetables suited to different purposes.

Choose cabbage when you want: a sharp, cruciferous flavor; soft, braised textures; maximum shelf life; feeding a crowd cheaply; making sauerkraut, stuffed rolls, or classic coleslaw.

Choose kohlrabi when you want: a mild, sweet, neutral flavor; dense, crisp texture (raw or cooked); a low-carb potato substitute; maximum vitamin C and fiber; fries, mash, gratin, or elegant raw preparations.

The best approach isn’t choosing one over the other — it’s knowing which one to reach for in each situation. They’re teammates, not competitors.