A soft, sweet bread roll under a crackled, sugary crust — named for how the top looks, with no pineapple in it.
What makes it pineapple bun
A soft, milky, slightly sweet bun.
A crackly topping of sugar, flour, egg and lard or butter, baked golden.
No pineapple.
Where it comes from
A fixture of Hong Kong's bakeries and cha chaan teng since the middle of the twentieth century. The crust is a sweet dough of sugar, flour, egg and lard laid over the bun before baking, and it cracks into a pattern that looks something like a pineapple's skin.
Split while warm and filled with a thick slab of cold butter, it's bolo yau — eaten with milk tea, and a Hong Kong breakfast in itself.