Teasle Gourd
Momordica subangulata
The Teasle Gourd (Momordica subangulata), known as bhat karela or spiny bitter gourd, is a lesser-known but highly prized climbing gourd from the foothills of the eastern Himalayas. Its small, oval, softly spined fruits are considered a delicacy in Assamese, Bengali, and Nepali cuisine, where their mild bitterness and firm texture make them ideal for stir-fries and stuffed preparations. Like its famous cousin bitter melon, the teasle gourd is valued both as a vegetable and in traditional medicine, though it remains much less known outside its native range.
• Sometimes called "bhat karela" (rice bitter gourd) in Assamese and Bengali
• Closely related to both bitter melon (Momordica charantia) and spiny gourd (Momordica dioica)
• The species name "subangulata" refers to the somewhat angled fruit shape
• Considered a delicacy in northeastern India, particularly in Assam and Manipur
• Much less bitter than common bitter melon, making it more palatable to wider audiences
Taxonomy
• Found wild in Assam, Manipur, Meghalaya, Arunachal Pradesh, and other northeastern Indian states
• Also occurs in Nepal, Bhutan, Bangladesh, and northern Myanmar
• Grows naturally in forest clearings, along stream banks, and at forest margins
• Adapted to the humid subtropical monsoon climate of the eastern Himalayan foothills
• Has been gathered and cultivated by indigenous communities for generations
• Known in Assamese traditional medicine for treating various ailments
• Also used in the traditional cuisines of hill tribes across the region
• Remains primarily a regional specialty, little known outside northeastern South Asia
Leaves:
• Broadly ovate to cordate, 6 to 14 cm long and 5 to 12 cm wide
• Palmately lobed with 3 to 5 shallow to deep divisions
• Medium green, slightly hairy, with toothed margins
Fruits:
• Small, ovoid to ellipsoid, 4 to 10 cm long and 3 to 5 cm wide
• Covered in soft, fleshy tubercles or blunt spines
• Green, sometimes with lighter striping, turning orange at full maturity
• Firm, white flesh with a mild, pleasant bitterness
• Contains flattened seeds in a small central cavity
Flowers:
• Small, pale yellow to cream colored, 1.5 to 2.5 cm across
• Dioecious: separate male and female plants
• Female flowers borne singly with a miniature fruit at the base
Roots:
• Tuberous, fleshy perennial rootstock
• Stores energy through the dormant season
• Sends up new vines annually with the return of warm, wet weather
• Thrives in warm, humid conditions with temperatures 20 to 32°C
• Requires high humidity and consistent rainfall during the growing season
• Prefers well-drained, humus-rich soils
• pH tolerance from 5.5 to 7.0
• Naturally grows in partial shade at forest margins
• Benefits from support structures for climbing
• Pollinated by insects
• Dormant during the dry, cool winter months
• Most productive from June through October
• Tolerates light frost in the dormant state
• Low in calories, approximately 20 to 25 kcal per 100 g
• Good source of vitamin C
• Contains moderate amounts of vitamin A and B-vitamins
• Provides dietary fiber, iron, and potassium
• Contains momordicin compounds associated with blood sugar regulation
• High water content, making it very hydrating
• Traditionally valued for its perceived blood-purifying properties
• Considered beneficial for digestion in traditional medicine
• Plant tuber segments in prepared mounds during the pre-monsoon period (March to April)
• Maintain a ratio of 1 male to 8 to 10 female plants when propagating from roots
• From seed, plant sex is unpredictable until flowering
• Provide trellis or bamboo supports, 1.5 to 2 meters high
• Plant in well-drained soil enriched with organic compost
• Vines resume growth with the onset of monsoon rains
• Fruits appear 40 to 50 days after vines begin growing
• Harvest fruits when green and firm, 4 to 8 cm long
• Pick regularly to encourage continued production
• Vines can remain productive for 3 to 5 years from established rootstock
• Most commonly sliced and stir-fried with onions, garlic, and turmeric
• Stuffed with spiced potato or fish paste (bharwan bhat karela)
• Added to fish curries and mixed vegetable preparations
• Cooked with fermented fish in traditional Assamese recipes
• Used in traditional pickles and chutneys
• Sometimes boiled and mashed with mustard oil and salt
• Used in traditional medicine preparations for blood sugar management
• Young shoots are occasionally cooked as greens
Fun Fact
The teasle gourd is part of a trio of Momordica species that form the backbone of bitter-flavored cooking across northeastern India: the common bitter melon, the spiny gourd, and this, the teasle gourd. Local cooks insist that the three have distinct flavors and should never be substituted for one another — a level of culinary specificity that speaks to the deep food culture of the eastern Himalayas.
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