Kohlrabi is excellent for diabetes meal planning. One cup raw contains just 11 g carbohydrate with 6 g fiber (net 5 g) and 36 calories. Glycemic index around 20 — very low. As a cruciferous family member with broccoli, cabbage, kale, and Brussels sprouts, kohlrabi contains glucosinolates with possible anti-inflammatory and antioxidant effects. Kohlrabi provides vitamin C (84% DV per cup), potassium, vitamin B6, and folate. The mild, slightly sweet flavor (similar to broccoli stems or jicama) and versatile texture (crunchy raw, tender when cooked) make kohlrabi useful in many applications. Both the bulb and leaves are edible — leaves taste like collard greens. Green or purple varieties have similar taste. Preparation: cut off leaves and stems, wash bulb, peel tough outer layer, cut into sticks/julienne/slices/cubes. Cooking methods include raw in slaws, steamed 5-7 min, roasted at 400°F for 25-30 min, sautéed slices, added to soups, spiralized as noodle substitute, or mashed. Diabetes-friendly applications include kohlrabi slaw with cabbage and small apple portion, raw kohlrabi sticks with hummus, roasted kohlrabi wedges with herbs, sautéed kohlrabi with garlic, kohlrabi in vegetable soup, stir-fried with sesame oil, mashed kohlrabi (mashed potato substitute), and sautéed kohlrabi greens like collard greens.
Nutrition Profile
| Nutrient (1 cup raw, 135 g) |
Amount |
% DV |
| Calories |
36 |
— |
| Carbohydrate |
11 g |
— |
| Fiber |
6 g |
22% |
| Net carbs |
5 g |
— |
| Protein |
2 g |
— |
| Vitamin C |
76 mg |
84% |
| Potassium |
475 mg |
10% |
| Vitamin B6 |
0.2 mg |
10% |
| Folate |
22 mcg |
5% |
| Magnesium |
26 mg |
6% |
Diabetes-Friendly Recipe Ideas
- Kohlrabi slaw with cabbage and small apple portion.
- Raw kohlrabi sticks with hummus or guacamole.
- Roasted kohlrabi wedges with olive oil, garlic, herbs.
- Kohlrabi-apple salad (small apple) with vinaigrette.
- Sautéed kohlrabi slices with garlic and herbs.
- Kohlrabi in chicken vegetable soup.
- Stir-fried kohlrabi with sesame oil, ginger, garlic.
- Mashed kohlrabi (mashed potato substitute).
- Kohlrabi noodles (spiralized) with marinara.
- Sautéed kohlrabi greens with garlic (like collard greens).
- German-style kohlrabi with light cream sauce.
- Kohlrabi gratin (small portion as side).
Cooking Methods
- Raw: best for slaws, salads, crudités; preserves crunch.
- Steamed: 5-7 min for chunks; tender result.
- Roasted: 400°F for 25-30 min; caramelizes flavor.
- Sautéed: 5-8 min sliced or julienned.
- Stir-fry: high heat with garlic and ginger; 3-5 min.
- Soup/stew additions: dice and add to vegetable soups.
- Mashed: boil 15-20 min then mash with butter and herbs.
- Spiralized: low-carb noodle alternative.
- Greens: sauté with garlic; substitute spinach or collards.
Comparison with Similar Vegetables
| Vegetable (1 cup raw) |
Carbs (g) |
Fiber (g) |
GI |
| Kohlrabi |
11 |
6 |
~20 |
| Jicama |
11 |
6 |
~17 |
| Turnips |
8 |
2 |
~30 |
| Radishes |
4 |
2 |
~15 |
| Cabbage |
5 |
2 |
10 |
| Cauliflower |
5 |
2 |
10 |
| Broccoli |
6 |
2.5 |
10 |
Buying and Storage
- Choose firm bulbs with smooth, unblemished skin.
- Smaller bulbs (3 inches or less) are most tender.
- Large bulbs may have woody outer layer.
- If leaves are attached: fresh-looking, bright green.
- Refrigerate bulb 2-3 weeks; greens 3-5 days.
- Available year-round; best in spring and fall.
- Common at farmers markets and specialty grocers.
- Look in Eastern European, German, or specialty sections.
Cultural Context
- German cuisine: kohlrabi name from German “kohl” (cabbage) + “rabi” (turnip).
- Indian cuisine: knol khol or nu kol; in curries and stir-fries.
- Eastern European: in soups and stews.
- Asian: stir-fried or in cold salads.
- Increasingly popular in U.S. through farmers markets.
- Often included in CSA boxes.
- Heritage variety: purple Viennese.
The Bottom Line
Kohlrabi is excellent for diabetes meal planning. One cup raw contains just 11 g carbohydrate with 6 g fiber (net 5 g) and 36 calories. Glycemic index around 20 — very low. As a cruciferous family member with broccoli, cabbage, kale, and Brussels sprouts, kohlrabi contains glucosinolates with possible anti-inflammatory and antioxidant effects. Kohlrabi provides vitamin C (84% DV per cup), potassium, vitamin B6, and folate. The mild, slightly sweet flavor (similar to broccoli stems or jicama) and versatile texture (crunchy raw, tender when cooked) make kohlrabi useful in many applications. Both the bulb and leaves are edible — leaves taste like collard greens. Green or purple varieties have similar taste. Preparation: cut off leaves and stems, wash bulb, peel tough outer layer, cut into desired shape. Cooking methods include raw in slaws (best for crunch), steamed 5-7 min, roasted at 400°F for 25-30 min, sautéed slices, added to soups, spiralized as noodle substitute, or mashed (mashed potato substitute). Diabetes-friendly applications include kohlrabi slaw with cabbage and small apple, raw kohlrabi sticks with hummus, roasted kohlrabi wedges, kohlrabi-apple salad with vinaigrette, sautéed kohlrabi with garlic, kohlrabi in vegetable soup, stir-fried with sesame oil, mashed kohlrabi, and sautéed kohlrabi greens with garlic. Cultural context includes German cuisine (name origin), Indian (knol khol in curries), Eastern European (in soups and stews), and Asian (stir-fried). Choose firm small bulbs (3 inches or less most tender); refrigerate 2-3 weeks. Often available at farmers markets, CSA boxes, and specialty grocers. For adults with type 2 diabetes seeking another low-glycemic vegetable for variety, kohlrabi is an underused option worth trying. See our broader diabetes diet guide for context.