Shanghai Butterfly Crackers

Shanghai butterfly crackers are known as hudie su (蝴蝶酥), literally "butterfly pastry." They are Shanghai's local take on the French palmier: two rounded wings of puff pastry, baked until golden, crisp, and lightly caramelized. A good one is airy and flaky rather than heavy or hard.

The pastry is a familiar bakery snack, a tea companion, and a practical gift to take home. It belongs to the city's Haipai food culture, where Western techniques and Shanghai tastes gradually became a local tradition in their own right.

How to Recognize It

Look for a clear double-wing or palm-leaf shape, fine curved layers, and a dry, crisp surface with sugar baked into the folds. A butterfly cracker should not resemble a soft croissant, a frosted cookie, or a dense biscuit. The center may be thicker than the tips, but it should still separate in light flaky sheets when bitten.

Shanghai Style

Many Shanghai versions are less aggressively sweet than heavily caramelized European palmiers. Butter fragrance and the contrast between crisp outer edges and light inner layers matter as much as sugar. Size, thickness, and crunch vary between bakeries, so compare the layers and freshness rather than assuming there is one correct texture.

From Bakery Counter to Tea Table

Butterfly crackers are best when bought fresh and eaten soon after purchase, with black tea or coffee to offset the butter and sugar. They are a gentler finish after savory food than another rich dessert. In the wider Haipai story, they sit naturally beside classics such as Shanghai-style borscht and deep-fried pork chop, though they belong at the bakery counter rather than the dinner plate.

Before You Buy

Ask for hudie su or show the characters 蝴蝶酥. Most versions contain wheat and butter. Flavored varieties can add cheese, seaweed, nuts, or other ingredients, so check when buying for a dietary restriction or as a gift. Keep them sealed and dry; humidity softens the layers quickly.