Cooking with Plantain: A Training Carbohydrate, Green to Ripe

The first mistake visitors make is biting into one raw. A plantain looks like a large, slightly tired banana, and it behaves nothing like one: green and uncooked it is chalky, astringent and faintly hostile. Plantain is not fruit in the way a banana is fruit. It is a staple starch that happens to grow on a stalk, closer in role to a potato than to dessert.

Across the tropics — and certainly across Colombia — it is one of the foundations of the daily plate. It appears fried, boiled, roasted, mashed, in soup, as a chip and as a spoon. And for anyone training seriously in a hot climate, it is a remarkably useful carbohydrate, because the same fruit gives you two entirely different foods depending on when you pick it up.

Reading the skin: three stages, three ingredients

The single most useful skill is learning to read ripeness, because the starch inside is converting to sugar the whole time.

• Verde — green, firm, hard skin. Almost pure starch, barely any sugar, high in resistant starch. This is the stage for patacones: sliced, fried once, flattened, fried again, salted. Also the stage for boiling into soup, where it thickens the broth and holds its shape.
• Pintón — half-ripe, yellow streaked with black. The in-between stage: some sweetness, still enough structure to hold a slice. Excellent roasted whole in its skin, or grilled alongside meat.
• Maduro — ripe, skin mostly or entirely black. Sweet, soft, caramelizing at the edges when it hits heat. This is tajadas maduras, the sweet counterpoint on a plate of rice and beans, and the base of dishes like aborrajados.

A blackened plantain skin is not spoilage. It is the signal that the conversion is complete.

What is actually inside

Raw green plantain runs to roughly 30 grams of carbohydrate per 100 grams, almost all of it starch, with very little sugar. As it ripens, a substantial share of that starch converts to simple sugars, which is why a ripe plantain tastes sweet and behaves faster in the body.

Two other things are worth knowing:

1. Potassium. Plantain is genuinely potassium-dense — in the region of 450 to 500 milligrams per 100 grams raw, comparable to or above a banana by weight. In a climate where you sweat heavily, that matters.
2. Resistant starch. Green plantain contains a large fraction of starch that resists digestion in the small intestine and is fermented by bacteria in the colon, producing short-chain fatty acids. Functionally it behaves more like fibre than like a fast carbohydrate.

There is also vitamin B6, vitamin C, and — in the ripe, orange-fleshed stage — provitamin A carotenoids.

Green before, ripe after

Because the two stages behave so differently, plantain is one of the few staples you can deliberately time.

• Before a session, green or pintón plantain, boiled or roasted, gives slow, steady carbohydrate without the heaviness of a large meal. Two to three hours ahead is comfortable for most people.
• After a session, ripe plantain is the easier choice: sweeter, faster, and appetising at a moment when appetite is often low. Alongside a protein source, it makes a straightforward recovery plate.
• On long days, boiled plantain from a soup travels well and sits easily, which is exactly why it turns up in field lunches all over the country.

One kitchen detail worth knowing: cooking starchy food and then cooling it increases its resistant starch content, a process called retrogradation. Yesterday's boiled plantain, eaten cold or reheated, is not the same food as it was hot from the pot — it is slightly gentler.

Cooking it properly

• Patacones (tostones). Peel a green plantain — easiest with a knife down the ridges, not by hand. Cut into thick rounds, fry gently until pale gold, remove, flatten between two flat surfaces, fry again hotter until crisp. Salt immediately. Eat with hogao, a simple sauce of tomato and spring onion.
• Plátano asado. Take a ripe plantain, slit the skin lengthwise, and roast it whole until the flesh is soft and the edges caramelize. Almost nothing to do, and hard to get wrong.
• In the pot. Green plantain chunks go into sancocho and thicken it as they soften. Add them early.
• Mashed. Boiled green plantain mashed with a little of its cooking water, garlic and salt is a plain, excellent side.

The frying is optional, incidentally. Boiled and roasted plantain are the everyday versions; the fried ones are the ones that travel into restaurant menus abroad.

What will be growing on site

Plantain is a natural fit for the agricultural plan taking shape on the 30 hectares of Phoenix Oasis in Rivera, Huila. It grows readily in this valley, it shades younger plantings while they establish, and it produces steadily rather than in a single annual burst.

The intention for the kitchen from July 2028 is exactly this kind of ingredient: local, unglamorous, deeply practical, and treated as a training food rather than a garnish. A green plantain before the climb and a ripe one after it is not a trend. It is what the region has done for a very long time, and it works.

You can see how the stays are being planned — or simply buy two plantains this week, one green and one black, and learn the difference by cooking it.