Health & Nutrition · 8 MIN READ

Kothavarangai: Fiber, Low GI, and Why You Should Eat This Underrated Bean

Often overlooked, this humble green bean is a fiber superstar with an incredibly low calorie count and a gentle glycemic impact. Here's the real story behind cluster beans, and how to cook them right.

By Shreya Chatterjee, Nutrition Writer · July 3, 2026

↑ Kothavarangai, or cluster beans, have a unique texture and impressive fiber content.

Calories (100g)

3.6 g

Carbs

2.7 g

Fiber

0.9 g

Net Carbs

Low

Glycemic index

1.6 g

Protein

WHAT THIS ARTICLE COVERS

01The fiber-packed bean
02Kothavarangai nutrition facts
03Glycemic index
04How to cook it right
05What kothavarangai is good for
06What to pair it with
07Eat freely — or be mindful?
08Three ways to eat it
09Frequently asked questions

Let's talk about the green bean that doesn't get nearly enough love: kothavarangai, or cluster beans. If you've had them, you know they're nothing like a regular green bean. They have a distinct, slightly bitter chewiness and a serious nutritional profile that's wildly underrated. For almost no calories, you get a huge hit of fiber. This isn't just a simple side dish; it's a functional food that's brilliant for blood sugar, gut health, and keeping you full.

IS KOTHAVARANGAI RIGHT FOR YOU?

At-a-glance suitability

Glycemic index

Very low; high fiber and minimal carbs.

LOW

Diabetes-friendly

Excellent. Fiber slows digestion and carbs are very low.

YES

Weight-loss friendly

Extremely. Only 22 calories per 100g with filling fiber.

YES

Heart-healthy

Virtually fat-free with fiber to help manage cholesterol.

YES

Gut-friendly

A great source of dietary fiber for regularity.

YES

Keto / low-carb friendly

Perfect fit. Only 0.9g net carbs per 100g serving.

YES

Blood-pressure-friendly

Naturally very low in sodium.

GOOD

Cholesterol-lowering

The soluble fiber content can contribute to lowering LDL.

GOOD

↑A quick read on where a 100g (about one cup, chopped) portion of cooked cluster beans fits.

The fiber-packed bean you're probably not eating

Kothavarangai (also known as guar beans) are a staple in many parts of India, but they're still a bit of a mystery elsewhere. They grow in, well, clusters, and have a flatter, more rugged look than a French bean. The texture is the main event: it's firm, chewy, and satisfying in a way softer beans aren't.

Yes, they can have a slightly bitter note, but that's part of their charm and a sign of their unique plant compounds. When cooked properly with spices and maybe a little coconut, that bitterness mellows into a complex, savory flavor. The real reason to get to know them, though, is their killer nutrition stats.

IN ONE LINE

Kothavarangai is extremely low-calorie, packed with fiber, and has almost zero net carbs. It's a secret weapon for blood sugar control and feeling full for longer.

Kothavarangai nutrition facts

Here's the breakdown for a 100-gram serving, which is about a cup of chopped beans. The numbers are frankly impressive.

Nutrition facts

Per 100 g cooked kothavarangai (cluster beans)

Calories22

% Daily Value*

Carbohydrate 3.6 g1%

Dietary Fiber 2.7 g10%

Protein 1.6 g3%

Total fat 0.1 g0%

Vitamin C 12 mg13%

*Percent Daily Values are based on a 2,000-calorie diet.

At a glance

Calories22 (per 100g)

Net Carbs0.9 g

MostlyFiber + water

Glycemic indexVery low

Best known forFiber · low calories

Look at that ratio: 3.6 grams of carbs, with 2.7 grams of that being pure fiber. That leaves you with less than one gram of net carbs, which is the amount that actually impacts blood sugar. For a vegetable, that's remarkable. You're getting 10% of your daily fiber for just 22 calories. It's a dieter's and a diabetic's dream food.

Kothavarangai's Glycemic Index

There isn't an official, universally cited glycemic index number for kothavarangai. But frankly, we don't need one to know how it behaves. With its high fiber content and vanishingly low net carbs, its effect on blood sugar is minimal. It's firmly in the 'low' GI category, and almost certainly at the very bottom of that scale. It's far gentler on blood sugar than even low-GI fruits like apples or cherries.

GLYCEMIC INDEX · KOTHAVARANGAI vs COMMON FOODS

Cluster Beans Have a Very Low Glycemic Impact

Cluster Beans

very high fiber

GI 15

LOW

Apple

whole fruit

GI 36

LOW

Mango

whole fruit

GI 51

LOW

White bread

refined

GI 75

HIGH

Cornflakes

refined

GI 81

HIGH

SCALE 0–90

04590

↑Approximate GI values. The GI for cluster beans is an estimate based on its composition, but its impact is negligible compared to fruits and especially refined grains.

How to cook it right

You can't just steam cluster beans like you would French beans. They need a little more persuasion, but it's worth it.

Trim the ends.

Just like with regular beans, snap or slice off the tough top and tail of each bean.

Don't be afraid to cook it well.

This is not a vegetable for a light, crisp-tender blanch. They need to be cooked through to soften their texture and mellow their flavor. Simmering or stir-frying for a good 10-15 minutes is typical.

Pair with strong flavors.

The bean's assertive character stands up well to garlic, ginger, onion, chilli, and warming spices like cumin and turmeric. A sprinkle of grated coconut at the end is a classic South Indian finish.

Consider a quick blanch.

If you're particularly sensitive to bitterness, you can blanch the beans in boiling salted water for 2-3 minutes and then drain them before adding to your main dish. This can help temper the flavor.

What kothavarangai is good for

Superb for blood sugar control

With just 0.9g of net carbs and a ton of fiber, kothavarangai barely moves the needle on blood sugar, making it an all-star for anyone with diabetes or insulin resistance.

0.9 g

net carbs

A weight-loss ally

It's tough to find a food that's more filling for fewer calories. The high fiber content promotes satiety, helping you feel full and manage your appetite.

kcal / 100g

Promotes a healthy gut

The 2.7 grams of dietary fiber per serving act as a prebiotic, feeding beneficial gut bacteria and promoting regular bowel movements. A healthy gut is linked to better immunity and overall health.

2.7 g

fiber

Supports heart health

Diets rich in fiber, particularly from vegetables like cluster beans, are linked to lower cholesterol levels and a reduced risk of heart disease. Plus, it's naturally fat-free and low in sodium.

0.1 g

fat

What to pair kothavarangai with

Cluster beans love bold partners that complement their earthy, slightly bitter flavor and chewy texture.

Grated CoconutFAT + SWEETNESS

The classic South Indian pairing. A little fresh or frozen grated coconut adds a touch of sweetness and fat that balances the bean's flavor perfectly.

Garlic & SpicesAROMATICS

Don't be shy. Sizzling mustard seeds, cumin, turmeric, and plenty of garlic or onion form the flavor base that makes these beans sing.

Lentils (Dal)PROTEIN + FIBER

Adding cooked cluster beans to a simple dal thickens it and adds another layer of texture and fiber, creating a complete and satisfying vegetarian meal.

PotatoesCOMFORT

The combination of soft, starchy potato and chewy, fibrous cluster beans is a classic in North Indian 'sabzi' preparations. A textural delight.

Shrimp or PrawnsPROTEIN

In many coastal cuisines, the sweet, tender pop of shrimp is a fantastic contrast to the hearty chew of cluster beans, often in a coconut-based curry.

Eat freely — or be mindful?

✓A great fit for

People with diabetes or pre-diabetes
Anyone on a low-carb or keto diet
People focused on weight loss or management
Those looking to increase their fiber intake
Adventurous eaters who appreciate complex flavors

!Go easy if

Those who dislike any bitterness in vegetables
People with IBS who are sensitive to a sudden high intake of fiber (introduce slowly)
If you're in a hurry — they need proper cooking, not a quick steam

Three ways to eat it

Ready to try them? Here are three classic, simple preparations that bring out the best in cluster beans.

SOUTH INDIAN · 15 MIN

Kothavarangai Poriyal (Coconut Stir-fry)

A simple, classic Tamil-style stir-fry where the sweetness of coconut balances the bean's character.

You need

250g kothavarangai, trimmed
1 tbsp coconut oil
1 tsp mustard seeds
1 dried red chilli
1/4 tsp turmeric
3 tbsp grated coconut
Salt to taste

Method

Chop beans into 1-inch pieces. Boil in water with salt for 10 mins until tender, then drain.

Heat oil, add mustard seeds and chilli. When seeds pop, add the cooked beans and turmeric.

Stir-fry for 2-3 minutes, then mix in the grated coconut. Serve hot.

Open full recipe

NORTH INDIAN · 20 MIN

Guar ki Sabzi (Spiced Dry Curry)

A dry curry (sabzi) with garlic and spices, common in Rajasthani and Punjabi cuisine.

You need

250g kothavarangai, trimmed
2 tbsp oil
1/2 tsp cumin seeds
1 onion, finely chopped
1 tsp ginger-garlic paste
1/2 tsp turmeric, 1 tsp coriander powder
Salt and red chilli powder to taste

Method

Pressure cook or boil the beans until tender. Drain and set aside.

Heat oil, add cumin seeds. Sauté onion until golden, then add ginger-garlic paste.

Add all spice powders and salt. Stir for a minute, then add the cooked beans. Mix well and cook for 5 more minutes.

Open full recipe

BASIC PREP · 10 MIN

Simple Steamed Kothavarangai

The simplest way to cook the beans to use in salads or other dishes. Focus on cooking them through.

You need

250g kothavarangai, trimmed
Pinch of salt

Method

Place trimmed beans in a steamer basket over boiling water.

Steam for 10-12 minutes, or until they are fully tender and have lost their raw bitterness. They should be soft, not crisp.

Toss with a little salt, olive oil, and lemon juice, or use in other recipes.

Open full recipe

Want more high-fiber, low-carb foods in your week?

Our meal planner can help you build a balanced week featuring vegetables like kothavarangai, with portions and macros already calculated and a single grocery list at the end.

Build my weekly plan →

SOURCES & REFERENCES · 3

One more thing

Eating well is rarely about willpower. It’s about having a short list of dinners you actually want to eat. Pick two from this list. Make them next week. The rest will follow.

If you want these on autopilot, our weekly meal planner can drop the picks above into your calendar with one click and build a single grocery list from the merged ingredients.

FREQUENTLY ASKED QUESTIONS

Frequently asked questions

Is kothavarangai good for people with diabetes?

Yes, it's one of the best vegetables you can eat. Its extremely low net carbohydrate content and high fiber mean it has a very minimal impact on blood sugar levels.

Why are my cluster beans bitter?

A slight bitterness is a natural characteristic of the bean. However, intense bitterness can mean they are undercooked. Unlike French beans, cluster beans need to be cooked thoroughly until tender to mellow out their flavor.

Can you eat kothavarangai raw?

No, you should not eat them raw. They are tough, very bitter, and hard to digest. They must be cooked to be palatable and for your body to absorb their nutrients.

Is kothavarangai the same as French beans or long beans?

No, they are different vegetables. While they are all legumes, kothavarangai (guar) has a flatter shape, a much firmer, chewier texture, and a more distinct, earthy flavor profile than the milder, softer French bean or long bean.

ABOUT THE AUTHOR

Shreya Chatterjee

NUTRITION WRITER

Shreya is a nutrition writer and the voice behind The Nutrition Pen, where she turns evidence-based nutrition into simple, repeatable eating habits. Her writing focuses on practical food guidance — what to actually put on the plate — for readers who want to eat well without the noise.

Meet the editorial team →

METHODOLOGY

How this article was created

Built using verified nutrition databases, culinary research, and traditional cooking knowledge — every claim is cross-referenced against the sources listed in the article.

· USDA data· Culinary research· Quality reviewed

Read our methodology →

TRANSPARENCY

About this content

Articles are curated using trusted food databases (USDA FoodData Central, IFCT), culinary literature, and dietary guidelines, then structured by our editorial team for clarity, accuracy, and usefulness.

· Verified data sources· Culinary research· Quality reviewed

Read our editorial policy →

RELATED RECIPES