Tropical Ingredients

Ash Plantain

Musa paradisiaca (plantain group)

Similar to a potato but with a subtle banana undertone

6 min read·Updated August 12, 2026
Growing regions: Caribbean, West Africa, Central America, and South and Southeast Asia
Other names: Alu Kesel (Sinhala: අළු කෙසෙල්), Vazhakkai (Tamil: வாழைக்காய்), Plantain (English), Cooking Banana (English), Green Banana (English), Platano (Spanish), Kele (Hindi), Dodo (West African English)
Family Musaceae Best for Curries, chips, fritters, stir-fries

Description

Ash plantain is a large, starchy cooking banana — a variety of banana that is harvested and eaten while still green and unripe. Unlike dessert bananas, plantains are high in starch and low in sugar, making them a versatile cooking ingredient rather than a snack fruit.

The fruit is larger and thicker than a dessert banana, with a green skin that turns yellow and eventually black as it ripens. The flesh is firm, white to cream-colored, and dense. When cooked, the texture is smooth and starchy — similar to a potato but with a subtle banana undertone. The flavor is mild and neutral when green, becoming sweeter as the fruit ripens.

"Ash plantain" specifically refers to the green, unripe stage — the skin has a slightly ashy, grey-green appearance. This is the stage at which plantain is most commonly used in Sri Lankan cooking, where it is a staple ingredient in curries, stir-fries, and fried dishes.

Plantain is one of the most important staple foods in the tropics, serving as a primary source of carbohydrates across the Caribbean, West Africa, Central America, and South and Southeast Asia.

Origin & History

Plantains are native to Southeast Asia, where they were domesticated from wild banana species (Musa acuminata and Musa balbisiana) thousands of years ago. They are one of the oldest cultivated crops in the tropics.

From Southeast Asia, plantains spread to India, Africa, and eventually the Americas. Portuguese and Spanish traders brought plantains to the Caribbean and Central America in the 15th and 16th centuries, where they became a staple food.

In Sri Lanka, ash plantain (alu kesel) is one of the most commonly consumed starchy foods. It is grown in home gardens and small farms across the island and is a key ingredient in everyday cooking. Plantain curry (alu kesel maluwa) is one of the most common and beloved Sri Lankan dishes.

Uses

Culinary

  • Curry: The most common Sri Lankan preparation — sliced plantain cooked in coconut milk with turmeric, chili, and spices (alu kesel maluwa)
  • Fried: Sliced and fried into chips, wedges, or crisps (a popular snack across the tropics)
  • Boiled: Peeled, cubed, and boiled as a starchy side dish
  • Stir-fry: Sliced and stir-fried with onion, chili, and spices
  • Roasted: Roasted over coals or in ovens (whole or in chunks)
  • Flour: Dried and ground into plantain flour (used in baking and as a thickener)
  • Ripe plantain: When fully ripe (yellow/black skin), plantain becomes sweet and is used in desserts, fritters, and sweet fried preparations
  • Leaves: Plantain leaves are used as natural food wrappers for steaming and grilling in many tropical cuisines

Other Uses

  • Animal feed: Overripe fruit and plant parts are used as livestock feed
  • Packaging: The large leaves are used as natural food wrapping and plates in traditional settings
  • Fiber: The pseudostem yields fiber used for rope and textiles in some regions

Nutritional Benefits

Ash plantain (green/unripe) is primarily a carbohydrate source but also provides:

  • Carbohydrates — 32g per 100g (cooked); a dense energy source
  • Dietary fiber — 2.3g per 100g
  • Potassium — 499mg per 100g (higher than bananas)
  • Vitamin C — 18.4mg per 100g
  • Vitamin A — as beta-carotene (higher in ripe plantain)
  • Vitamin B6 — 0.3mg per 100g
  • Magnesium — 37mg per 100g
  • Iron — 0.6mg per 100g
  • Low fat — 0.2g per 100g
  • Resistant starch — high in unripe plantain; acts as a prebiotic when cooked and cooled

Green plantain is higher in resistant starch and lower in sugar than ripe plantain. As it ripens, the starch converts to sugar, making it sweeter but less beneficial for blood sugar management.

How to Prepare Ash Plantain

  1. Select: For cooking (savory), choose green, firm plantains with an ashy-grey skin. For sweet preparations, choose yellow-ripe or black-ripe plantains.
  2. Peel: Cut off the ends. Score the skin lengthwise with a knife and peel away. Green plantain skin is thick and may require a knife rather than fingers.
  3. Cut: Slice into rounds, half-moons, or lengthwise strips depending on the dish.
  4. Soak (optional): Soak sliced green plantain in salted water for 10–15 minutes to reduce starchiness and prevent browning.
  5. Cook:
    • Curry: Add sliced plantain to coconut milk curry base with turmeric, chili, and curry leaves; simmer for 15–20 minutes
    • Frying: Deep-fry slices until golden and crispy (for chips) or pan-fry until tender
    • Boiling: Boil cubes in salted water for 15–20 minutes until tender
    • Stir-fry: Stir-fry with onion, chili, and spices over high heat
Tips: Green plantain is easier to peel if you score the skin first. The flesh browns quickly when cut — soak in salted water or lime water to prevent oxidation. Ripe plantain is much sweeter — adjust recipes accordingly. Plantain chips should be sliced thin and fried at a moderate temperature for maximum crispiness. Pairs well with coconut milk, turmeric, chili, curry leaves, and mustard seeds. Store green plantain at room temperature; refrigerate ripe plantain.

Recipes

As Jungle Kitchen develops recipes featuring ash plantain, those will be linked here.

Suggested applications: Alu kesel maluwa (plantain curry), plantain chips, stir-fried plantain, boiled plantain with sambol, ripe plantain fritters.

Varieties

  • French plantain — large, thick fruit; the most common cooking variety; very starchy
  • Horn plantain — even larger and longer; extremely starchy; used for flour and chips
  • Ash plantain (Musa paradisiaca) — the Sri Lankan cooking banana; green, starchy, mild flavor
  • Ripe plantain — the same fruit at a later stage; yellow to black skin; sweet, soft flesh; used in desserts and sweet fried preparations
  • Sri Lankan varieties — locally adapted cultivars; commonly grown in home gardens

Fun Facts

  • Plantains are the world's 10th most important staple crop, feeding hundreds of millions of people
  • Despite their appearance, plantains are not a different species from bananas — they are simply a starchier variety of the same fruit
  • In Sri Lanka, alu kesel (ash plantain) is one of the most affordable and widely available foods — it is a true "people's food"
  • Plantain chips are one of the most popular snacks across the tropics, from Sri Lanka to Nigeria to Colombia
  • The resistant starch in green plantain acts as a prebiotic, feeding beneficial gut bacteria
  • In West Africa, fried plantain (called "dodo" in Nigeria) is a beloved street food
  • In the Caribbean, twice-fried plantain (tostones/patacones) is a staple side dish
  • Plantain leaves are biodegradable and are used as natural plates and food wrappers in many cultures
  • A single plantain plant produces one bunch of fruit (100–200 individual fingers) and then dies — but it produces "pups" (offshoots) that grow into new plants
  • The word "plantain" comes from the Latin plantago, but the fruit is unrelated to the herb also called plantain