Pineapple Bun (Bo Lo Yau)

Name: Pineapple Bun (Bo Lo Yau)
Total time: 3 h 15 min
Yield: Makes 8 buns
Cuisine: Chinese
Ingredients: 300 g bread flour, 30 g caster sugar, ½ tsp (3 g) instant yeast; 1 large egg, beaten; 120 ml warm milk, 40 g softened butter, ½ tsp (3 g) salt; 80 g softened butter, 70 g caster sugar; 1 small egg yolk (about 15 g), ½ tsp (3 g) vanilla; 130 g plain flour, ¼ tsp (1 g) baking powder, a pinch of salt; Extra sugar or a light egg wash, for the bake's shine; 60 g cold salted butter, cut to 8 slabs — the bo lo yau's own heart, optional but honest

Chinese · Medium · Makes 8 buns

The Hong Kong tea house's own bun and the bakery canon's gentle joke: a soft, sweet milk bun wearing a crisp, sugary cookie crust scored to the pineapple's pattern — no pineapple anywhere, the name the crust's own crackle's resemblance. The technique is the two doughs' discipline: the bread's slow prove below and the cookie's cold cap above, baked together to the crackled golden shell over the pillowy crumb.

Quantities live in the recipe card.

The milk bread dough

The cookie crust (the 'pineapple' top)

To serve the classic way

the bo lo yau's own heart, optional but honest

- The two doughs' order: the cookie dough made first and chilled — it must be cold-firm when the bread's proved, so it caps and cracks rather than smears. The bread dough kneaded to the windowpane's thin membrane (10–12 minutes by machine, 15 by hand) and proved 90 minutes to its doubling. - The portioning's discipline: the bread dough divided to 8 equal balls (about 65 g each), the chilled cookie dough to 8 discs (about 35 g each). The two trays' worth of patience, side by side, before any shaping begins.

Step 1. The shaping — the cookie cap over the proved ball. Each bread ball flattened lightly and re-rounded to a tight, smooth ball on the tray, and each cold cookie disc pressed over the dome's top two-thirds — a cap, not a wrap — the scoring's crosshatch drawn through the cookie's face with a knife's tip at 5 mm intervals, deep enough to score the cookie but not the bread beneath. Checkpoint — the capped buns prove a second 40 minutes to their re-doubling, the cookie cap riding the rise without cracking loose — a cap that slides off at this stage was too warm; re-chill the next disc before it goes on.

Step 2. The bake — 16–18 minutes at 180 °C. The oven preheated to 180 °C, the buns baked on the middle shelf 16–18 minutes to the crust's deep golden and the bread's own hollow knocking at the base — the cookie's sugar and butter crisping to the crackled tile over the soft dome's swell. Checkpoint — the bun's base knocks hollow and the crust's crosshatch has opened to the pineapple's own cracked pattern — the crack's depth the scoring's own dividend, and a smooth un-cracked top the knife's timidity already visible. Chef’s Note — the cold cap on the warm rise is the whole engineering: the cookie crust sets and crisps before the bread beneath finishes its final spring, and the score lines open as the dome swells — the pineapple pattern is baked architecture, not decoration. This is why the cookie dough chills twice: once after mixing, and the discs' re-chill if the kitchen runs warm. Split the warm bun and slide in the cold butter slab — the bo lo yau's own service, the melting slab against the soft crumb — and the tea house's argument is yours at the first bite.