It's easy to dismiss ash gourd—or boothai, or winter melon—as just... water. It's pale, it's mild, it doesn't scream for attention like a bright red pepper. But that's its secret. This incredibly low-calorie, high-fiber vegetable is a cooling, hydrating, and surprisingly versatile player in the kitchen, with a glycemic index so low it's barely on the chart. Think of it less as a flavor star and more as a brilliant, health-boosting canvas.
↑ Ash gourd's high water content makes it incredibly hydrating and low in calories.
The ultimate low-cal vegetable
Ash gourd goes by many names—boothai, winter melon, wax gourd, petha—but its character is consistent: it's one of the most hydrating, lowest-calorie vegetables you can find. With a water content of around 96%, it's essentially solid water, but it's that other 4% that makes it interesting.
It has a very mild, slightly sweet taste that's a cross between a cucumber and a zucchini, making it a fantastic blank slate. It readily absorbs the flavors of whatever you cook it with, adding bulk, fiber, and nutrients to curries, soups, and juices without adding calories.
IN ONE LINE
Ash gourd is an ultra-hydrating, very-low-calorie vegetable with almost zero net carbs, making it exceptional for weight loss and blood sugar management.
Ash gourd nutrition facts
Here's the nutritional profile for a 100-gram serving of raw ash gourd (about one cup, cubed). The numbers speak for themselves.
Take a good look at those carbohydrate numbers. Out of 3 grams of carbs, a whopping 2.9 grams are fiber. This means its 'net carb' count—the carbs that your body actually digests and absorbs—is almost zero. That's not a typo. It's why ash gourd has such a gentle, almost non-existent, effect on blood sugar. You also get a decent little hit of Vitamin C for good measure.
Ash gourd's glycemic index
Because its net carbohydrate content is so close to zero, a formal glycemic index (GI) for ash gourd isn't typically measured—there's simply not enough sugar or starch to provoke a response from your blood glucose. For all practical purposes, its GI is negligible. It's one of the most blood-sugar-friendly foods you can eat, sitting far below even the lowest-GI fruits.
GLYCEMIC INDEX · ASH GOURD vs COMMON FOODS
Ash gourd's negligible glycemic impact
Ash Gourd (est.)
vegetable
LOW
Cherries
whole fruit
LOW
Apple
whole fruit
LOW
Pineapple
whole fruit
MEDIUM
White bread
refined
HIGH
SCALE 0–90
04590
How to use ash gourd
Getting started with ash gourd is simple. It's forgiving and versatile.
01
Juice it.
One of its most popular modern uses. Blended with a little water, lime, and mint, it makes a cooling, hydrating drink. Don't strain out the fiber!
02
Add it to soups and stews.
Cube it and add it to any dal, sambar, or vegetable stew. It will cook down, become tender, and add bulk and nutrients without altering the core flavor.
03
Make a simple curry.
Sauté with mustard seeds, turmeric, and other spices, then simmer with a splash of coconut milk for a quick, light side dish.
04
Don't overcook it.
Like zucchini, it can turn to mush if boiled for too long. Cook it until it's just tender—usually 10-15 minutes is plenty.
What ash gourd is good for
01
Exceptional for weight management
At just 13 calories per 100g and packed with water and fiber, ash gourd helps you feel full on virtually no calories.
13
calories
02
Superb for blood sugar control
With a net carb count near zero and a negligible glycemic index, it's one of the best vegetables for anyone managing diabetes or on a low-carb diet.
~0g
net carbs
03
Promotes hydration
Composed of about 96% water, eating ash gourd is a great way to contribute to your daily fluid intake, especially in hot weather.
96%
water
04
Supports digestive health
The combination of high water content and soluble fiber can be very soothing for the digestive system, helping with regularity and gut comfort.
2.9g
fiber
What to pair it with
Ash gourd is a team player. Its mildness is a strength, allowing it to be a perfect vehicle for flavor.
Is it right for you?
Three simple recipes
Here are three easy ways to get started with this versatile gourd.
Want more low-carb vegetables in your life?
Our meal planner can help you build balanced, flavorful meals around smart ingredients like ash gourd. Get your calories and macros calculated automatically, with a single grocery list for the week.
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 ash gourd good for diabetes?
Yes, it's an excellent choice. With almost zero net carbohydrates and a negligible glycemic index, it will not cause a spike in blood sugar levels. Its high fiber content is also beneficial for blood sugar management.
Can you eat ash gourd raw?
Yes. While it's most often cooked, raw ash gourd is frequently juiced. You can also grate it into salads for a crunchy, hydrating element, similar to how you might use cucumber.
What does ash gourd taste like?
It has a very neutral, mild flavor, often compared to a cucumber or unflavored zucchini. It's slightly watery and subtly sweet. Its main role is to absorb the flavors of the spices and ingredients it's cooked with.
How do you pick and store ash gourd?
Choose a gourd that feels heavy for its size and is free of soft spots or blemishes. The powdery 'ash' on the skin is normal. A whole gourd can be stored in a cool, dark place for over a month. Once cut, wrap it tightly and store it in the refrigerator for up to a week.
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
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