Water Chestnut: Benefits, Uses & Dosage

If you have ever cooked for a Hindu fast, you may already have Water Chestnut in your pantry. Ground into Singhade ka Atta, its flour stands in for grains during religious fasts, and Ayurveda values the same fruit as a cooling, deeply nourishing food.

The plant, called Shringataka (श्रृङ्गाटक) in Sanskrit and Singhada (सिंघाड़ा) in Hindi, is an aquatic plant of ponds and lakes across India. Our records list it as Trapa bispinosa Roxb., known in English as Water Chestnut or Water Caltrop. Its fruit carries horn-like projections, which is where the name comes from: Shringa means horn.

Inside the horned shell is a white, starchy, sweet kernel. It is eaten raw, boiled or dried into flour, and it is a winter fruit.

Water Chestnut is a food-medicine. Sweet and astringent in taste (Madhura, Kashaya Rasa), heavy and unctuous (Guru, Snigdha Guna), with a cold potency (Sheeta Virya) and a sweet post-digestive effect (Madhura Vipaka), it is built to nourish and cool.

Nourishment and Strength

The Bhavaprakash Nighantu calls it nourishing (Brinhana) and strengthening (Balya). It is described as particularly useful in debility and weakness, which is why our knowledge graph links it to weakness and debility (Kshaya).

Cooling

A second passage in the same text lists it as cooling (Sheetala) as well as nourishing and heavy. It suits people who feel depleted and overheated at the same time.

Reproductive Vitality

Water Chestnut is also described as an aphrodisiac (Vrishya), a classical term for foods and herbs that support reproductive strength.

A Grain Substitute

Its flour replaces cereals during religious fasts. That makes it a practical way to keep eating something substantial when grains are off the table.

The fruit is highly nutritive, cooling and aphrodisiac.

Bhavaprakash Nighantu, Varga 6

The classical dose for Water Chestnut is simply "as food". You use it in the kitchen, not by the gram.

Because the fruit is seasonal and available in winter, the flour is how most people use it the rest of the year.

Water Chestnut is a food, and our sources record no contraindications, drug interactions or overdose signs. The one quality worth respecting is its heaviness.

• Heavy to digest: it is heavy and unctuous (Guru, Snigdha). If you have weak digestion, bloating or a sluggish appetite, eat it in modest amounts and prefer it cooked.
• Cooling: its cold potency is welcome when you feel hot, but go lightly if you are already chilled or congested.
• Starch content: the kernel is about 50 to 55% starch, which is useful to know if you are watching carbohydrate intake.

As a common food, it is generally used without special precautions in normal culinary amounts.

Water Chestnut is a nourishing food. These comparisons set it beside other building plants on this site.

As an everyday food, Water Chestnut is used widely. Our sources do not give population-specific doses, so normal food amounts are the guide.

Pregnancy & Nursing

Used as a common food, it is part of many traditional diets. For anything beyond ordinary culinary amounts, ask your doctor or practitioner.

Children

Cooked dishes made with the flour are a familiar food. Introduce it in small portions, since it is heavy to digest.

Elderly

Its nourishing (Brinhana) and strengthening (Balya) actions suit age-related weakness, but cooked forms are easier on older digestion than raw.

Athletes

Its starch content and strengthening reputation make it a reasonable carbohydrate source, especially on days you avoid grains.