Kangkung (Water Spinach)
Get to know kangkung (water spinach) — a crisp leafy green rich in vitamin A. Nutritional content, health benefits, and how to stir-fry kangkung so it stays crisp.
What Is Kangkung (Water Spinach)?
Kangkung (Ipomoea aquatica), also known as water spinach, is a vegetable with long, hollow stems and pointed leaves that thrives in watery areas, whether in rice paddies, ponds, or grown on land. Its texture is crisp with a slightly sweet taste after cooking, and kangkung is one of the most popular stir-fried vegetables in Indonesia — easily found at warung tegal (Indonesian street food stalls), restaurants, and home kitchens alike.
Stir-fried kangkung, especially the terasi (shrimp paste) version and cah kangkung in the Chinese food style, is a favorite dish that's almost always on the menu at any restaurant because of its savory flavor and quick cooking process.
Nutritional Content of Kangkung
Per 100 grams of raw fresh kangkung:
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| Nutrient | Amount |
|---|---|
| Calories | ~19 kcal |
| Carbohydrates | ~3.1 g |
| Fiber | ~2.1 g |
| Vitamin A | ~315 mcg |
| Iron | ~1.7 mg |
Kangkung is very low in calories yet fairly rich in vitamin A and iron compared to other leafy greens, making it a great everyday vegetable.
Health Benefits
- Supports eye health — its high vitamin A content plays an important role in maintaining vision function.
- Helps prevent mild anemia — its iron content supports red blood cell formation.
- Low in calories, high in fiber — good for maintaining a feeling of fullness without adding much caloric intake.
- Rich in antioxidants — its beta-carotene and polyphenol content helps fight free radicals in the body.
How to Eat / Prepare Kangkung
- Stir-fried — cah kangkung with garlic and oyster sauce, or the Sundanese-style terasi (shrimp paste) stir-fry with sambal.
- Boiled for lalapan (fresh vegetable side dish) — boiled kangkung dipped in sambal, simple and still crisp.
- Plecing kangkung — a Lombok specialty, boiled kangkung topped with spicy tomato sambal and bean sprouts.
- Added to noodles — often included as a vegetable side in a bowl of chicken noodle soup (mi ayam) or meatball soup (bakso).
Cook kangkung over high heat for a short time so the stems stay crisp and the green color doesn't fade — cooking it too long makes the texture mushy and reduces its nutrients.
How to Choose & Store
- choose stems that are still firm and crisp when snapped, not soft or slimy
- leaves should be fresh green without yellow spots or excessive wilting
- avoid kangkung with an unpleasant smell or stems that have turned black
- wrap in tissue or newspaper, then store in the vegetable drawer of the fridge
- it's best to cook it within 1-2 days since kangkung wilts quickly at room temperature
- don't wash it before storing — just wash it right before cooking
Practical Tips
- Separate the stems and leaves when cutting — the stems need slightly longer cooking time than the leaves, which wilt quickly.
- Cook over high heat — a quick stir-fry technique keeps the kangkung crisp and its color bright.
- Wash thoroughly, multiple times — since it grows in watery areas, kangkung often carries dirt or sand between the stems.
- Don't overcook — remove it as soon as the leaves wilt and the stems soften slightly, usually just 2-3 minutes in a hot pan.
Frequently Asked Questions
Is it true that eating kangkung makes you sleepy?
Is kangkung safe for pregnant women?
Why does kangkung often taste gritty?
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