P
Chinese · Hong Kong
Cantonese Pineapple Bun (Bo Lo Bao) — Soft Bread Tradition
Bo lo bao (菠蘿包) — pineapple bun — is a Hong Kong bakery staple, containing no pineapple whatsoever. The name refers to the golden, crackled sugar-egg topping that resembles a pineapple's skin texture. The bun itself is a soft, slightly sweet milk bread (like Japanese shokupan). Served warm with a slab of cold salted butter inserted in the split bun is the classic preparation.
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I
The Market List
The benchmark for each ingredient, and who stocks it near you. Tap a stockist to go straight to the product.
For the tangzhong
20 g
plain flour
Not yet stocked in British Columbia
100 ml
water
Your own market
For the bread dough
300 g
plain flour
Not yet stocked in British Columbia
50 g
caster sugar
Your own market
5 g
instant dried yeast
Your own market
5 g
fine salt
Your own market
120 ml
whole milk
warm
Your own market
1
egg
beaten
Your own market
40 g
unsalted butter
softened, cubed
Your own market
For the su pi (cookie topping)
60 g
vegetable shortening
room temperature
Not yet stocked in British Columbia
80 g
icing sugar
sifted
Your own market
1
egg
beaten, divided — part for topping, part for egg wash
Your own market
120 g
plain flour
sifted
Not yet stocked in British Columbia
To serve
80 g
salted butter
cold, cut into thick slabs
Your own market
II
The Method
1
Make the tangzhong. Whisk 20 g plain flour with 100 ml cold water in a small saucepan until smooth. Set over medium heat and stir constantly until the paste thickens and turns glossy and the mixture reads 65 °C on an instant-read thermometer — it will hold a trail when the spoon is lifted. Remove from heat, press cling film directly onto the surface and cool to room temperature.
2
Make the dough. Combine 300 g plain flour, caster sugar, yeast and salt in a large bowl. Add the warm milk, beaten egg and cooled tangzhong. Mix to a shaggy dough, then knead — by hand or stand mixer — until smooth, about 8 minutes. Add the softened butter in pieces and continue kneading until the dough is supple, slightly tacky and passes the windowpane test: a small piece stretched between the fingers should thin to a translucent membrane without tearing.
3
First proof. Shape the dough into a ball, place in a lightly oiled bowl, cover and leave at room temperature until doubled in volume. Knock back, divide into eight equal portions (approximately 80 g each) and roll each into a smooth, taut ball. Arrange on a lined baking sheet with ample spacing, cover loosely and prove again until noticeably puffed, about 30–40 minutes.
4
Make the su pi. Beat the shortening and icing sugar together briefly — the mixture should be just combined, not aerated. Add half the beaten egg and mix. Add the sifted flour and fold until the dough just comes together into a crumbly, pliable mass. This is where the dish lives or dies: overworking the topping develops gluten, producing an elastic sheet that will not crack in the oven — stop the moment it coheres and handle it minimally.
5
Apply the topping. Divide the su pi into eight portions. Flatten each between two sheets of cling film into a disc slightly smaller than the proved bun. Peel off the film and drape each disc over the top of a bun, pressing gently so it adheres. Using a sharp knife or lame, score a crosshatch grid — four lines each way — through the topping without cutting into the bread beneath. Brush the scored topping with the remaining beaten egg.
6
Bake. Preheat the oven to 180 °C. Bake the buns for 12–15 minutes. The topping should be deeply golden and visibly cracked along the scored lines; the bun flanks should be pale and soft to the touch. Do not overbake: the interior must remain pillowy.
7
Serve. Split each bun horizontally while it is still warm — within 20 minutes of leaving the oven. Insert a thick slab of cold salted butter. The butter should begin to melt against the warm crumb immediately on contact: the savoury-sweet contrast of cold butter and hot bread is the dish.
III
Quality Hierarchy
01
Reserve — Buns baked to order, served within ten minutes: the topping retains its full crackle, the butter is at refrigerator temperature, and the savoury-sweet contrast is at its sharpest.
02
Estate — Freshly baked and served within the 20-minute window; topping still crisp, butter cold enough to sit as a slab rather than pool.
03
Market — Baked the same morning, reheated briefly in a low oven; some crackle is sacrificed but the soft crumb and butter serve well.
04
House — Room-temperature buns from a Hong Kong cha chaan teng counter — acceptable as a bakery staple, but the topping will have softened and the butter contrast is diminished.
IV
Sensory Tests
◇Touch. The tangzhong is ready when it holds a clear trail lifted from the spoon and the thermometer reads 65 °C.
◇Touch. The bread dough is sufficiently kneaded when it stretches to a thin, translucent windowpane without tearing.
◇Touch. The su pi is correctly made when it just coheres under light pressure but remains crumbly — it should not spring back or feel smooth.
◇Sight. The buns are done when the topping is deep golden and the scored lines have opened into visible cracks resembling pineapple skin.
◇Where it lives or dies. The su pi must be mixed until it just coheres — crumbly and short, never elastic — because an over-worked topping will not crack during baking and the defining pineapple-skin texture is lost.
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VI
What to Pour
The pairing
Baijiu
From British Columbia
Wine
Without alcohol
GT's Synergy Organic Kombucha — Gingerade
Not yet stocked in British Columbia
Non-alcoholic
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The whole pairingPillar VII
Origin and lineage are part of membership.
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