Name: Kluay Buat Chi (กล้วยบวชชี) — Banana in Coconut Milk
Prep time: 10 min
Cook time: 25 min
Total time: 35 min
Yield: 6 servings
Cuisine: Thai
Ingredients: 1 comb kluay nam wa bananas (กล้วยน้ำว้า); 1,000 ml coconut cream (หัวกะทิ); 120 g palm sugar (น้ำตาลปี๊บ); ½ tsp salt (เกลือ); 5 pandan leaves (ใบเตย)

The Dessert Built On One Banana

กล้วยบวชชี is a two-ingredient dessert that lives or dies on technique. The banana is กล้วยน้ำว้า, the kluay nam wa — the short, fat cooking banana of Thailand, firm and faintly tannic, which survives the simmer where a dessert banana would collapse. Wongnai's recipe is the classic frame: coconut cream, palm sugar, a little salt, and pandan knotted in for the scent.

The technique arguments are all about the same enemy: the banana's ยาง, its latex, which turns the coconut milk grey and the flavour astringent if it's not dealt with first. Wongnai boils the sliced banana once before it meets the cream; the Aroyd recipe boils the fruit whole, in its peel for 15–20 minutes; Kapook steams the slices for 30 minutes — her stated reason being that steamed banana stays "หนึบ, firm and chewy" and never goes astringent. A Bloggang cook built her entire recipe around the goal in its title: "coconut milk that doesn't turn grey."

All four agree on the finish: the cream must simmer gently, never boil hard, and stop the moment the banana is glossy and infused — "so the cream enters the fruit," as Wongnai puts it, "not so long that it goes to mush."

The Recipe (serves 6 — the Wongnai classic)

Thai	English	Amount
กล้วยน้ำว้า	Kluay nam wa bananas	1 comb
หัวกะทิ	Coconut cream	1,000 ml
น้ำตาลปี๊บ	Palm sugar	120 g
เกลือ	Salt	½ tsp
ใบเตย	Pandan leaves	5

Kapook's boxed-coconut version: 500 ml coconut milk, 80 g palm sugar + 80 g white sugar, with the bananas steamed 30 minutes instead of boiled. Aroyd's finish: head cream poured over at the end for richness.

The Method

Prep the fruit. Peel and slice, then wash in lightly salted water so the slices don't blacken.
Wash off the latex. One boil in plain water — the step that keeps the coconut milk white. (Or steam 30 minutes, Kapook's way.)
Simmer. Half the cream, pandan, banana, palm sugar and salt over medium-low, stirring until the sugar dissolves.
Finish. The remaining cream in, a short simmer so the cream soaks into the fruit — then off the heat. Serve warm in the bowl.

Where Thai Sources Disagree

How to handle the latex. Wongnai boils the sliced fruit once; Aroyd boils it whole in the peel for 15–20 minutes; Kapook steams the slices for 30. Three routes to the same end — a cream that stays white and a banana that doesn't bite back.

The sugar. Wongnai and Aroyd use palm sugar alone (120 g and ½ cup); Kapook splits palm and white 50/50; the Bloggang recipe is white sugar only, 1½ cups for a 12–14 banana batch. The palm-sugar versions taste deeper; the white-sugar one is the old sweet-shop style.

Ripe or half-ripe. Kapook explicitly allows "สุกหรือห่ามตามชอบ" — ripe or half-ripe, to taste. The half-ripe fruit holds its shape through the simmer; the ripe one is softer and sweeter.

When the cream goes in. Wongnai stages it — half early, half late; Aroyd builds on tail cream and pours head cream at the end; Kapook adds everything at once. The staged versions are richer at the surface.

Which banana. Every source specifies kluay nam wa; Kapook adds that kluay hom and kluay khai also work "in a different way" — softer, sweeter, less traditional.

How Western Versions Get It Wrong

The wrong banana. Cavendish turns to mush in minutes. The dish needs kluay nam wa — or at minimum a barely-ripe firm cooking banana.
Skipping the latex step. Boil or steam the fruit first, or the coconut milk greys and the flavour goes astringent.
Calling it banana soup. It's a dessert — sweet coconut cream with fruit. Savoury treatment misunderstands the dish.
Boiling the cream hard. A rolling boil splits coconut cream. Medium-low, stirred, is the whole method.
Overcooking to softness. The sources stop the moment the cream enters the fruit. Cooked to collapse, the dish has failed its own technique.

UK Ingredient Notes

Kluay nam wa: Thai grocers sell the small chubby bananas; plantain or barely-ripe baby bananas are the workable substitutes.
Coconut cream: tinned blocks (the solid top layer) are richer than boxed milk — use tinned for the Wongnai ratio.
Palm sugar: blocks at Thai grocers; light muscovado is the closest flavour match.
Pandan leaves: frozen at Thai grocers — knot them whole, lift them out at the end.
Serve warm; it also holds a day in the fridge and reheats gently.

Sources

This recipe is translated from the following Thai-language sources. Where they disagree, we've said so.

1. Wongnai — "วิธีทำ 'กล้วยบวชชี' นุ่มหนึบหวานละมุน กะทิหอมมันโดนใจ!" (the recipe used here) — wongnai.com

2. Kapook — "กล้วยบวชชีกะทิกล่อง สูตรง่าย กล้วยหนึบไม่เละอร่อยหอมหวาน" (the steam-30-minutes technique) — cooking.kapook.com

3. อร่อยดี (Thai Agri Foods) — "กล้วยบวชชี สูตรนี้ ทำขายก็ขายดี" (the boil-in-the-peel method + head-cream finish) — aroyd.co.th

4. Bloggang (jazzy-bong) — "กล้วยบวชชีสูตรอร่อย — น้ำกะทิไม่เป็นสีเทา" (the white-coconut-milk technique) — bloggang.com

Johnny Tiger

Johnny researches and translates Thai recipes from Thai-language sources — chefs, restaurants and home cooks in Thailand — and publishes them with their sources cited. No westernised shortcuts, no invented steps.