A laminated pastry of dozens of brittle oil-and-water dough sheets wrapped around salted duck egg yolk and red bean paste—sweet bean meets briny yolk in one crumbling, addictive bite.
Egg yolk pastry is a direct evolution of Su-style mooncake, itself traceable to the layered pastry traditions of Jiangnan. After 1949, large numbers of Jiangnan migrants brought Su-style pastry technique to Taiwan, where it encountered already-established Western-influenced pastry culture. Chen Zengxiong, the third-generation heir of Baoquan, a century-old pastry shop in Fengyuan, Taichung, combined salted duck egg yolks with red bean paste and wrapped them in laminated oil-and-water pastry, creating the modern egg yolk pastry form. Taiwanese trade press from the 1980s credits Chen as the innovator of the modern form. The pastry became Taiwan's defining Mid-Autumn Festival gift by the 1990s, and crossed to mainland China via tourism and cross-strait trade in the 2010s, igniting a national trend.
Pick up an egg yolk pastry and admire the faint spiral of laminated layers visible on the golden surface. Break it open—the layers separate with an audible crumble, releasing a breath of lard-warm pastry and roasted sesame. The red bean paste inside is dense and sweet; the salted yolk at the center is sandy, faintly sulfurous, unmistakably savory. The sweet-salt interplay is the whole point.
The laminated pastry relies on alternating two fundamentally different doughs: water pastry (flour + lard + water, which forms gluten) and oil pastry (flour + lard only, gluten-free). Repeated rolling and coiling creates dozens of alternating fat-and-dough interfaces. In the oven, the water in the water pastry converts to steam, puffing each thin layer apart as the lard in the oil pastry melts; gluten networks in the water pastry set the structure while lard creates physical barriers preventing neighboring layers from fusing—producing the characteristic shattering flake. Salted yolk phospholipids (lecithin) emulsify the yolk fat during heating; thermal decomposition of yolk proteins releases sulfur-containing volatiles (hydrogen sulfide, dimethyl sulfide) responsible for the savory-sandy aroma. The low water activity of the bean paste filling (below 0.75) prevents moisture migration into the crust, keeping the layers crisp.
Variations
Taro paste egg yolk pastry (yu ni dan huang su) replaces red bean with purple taro and is extremely popular. Modern flavors include matcha bean paste, black sesame, and fig. Xiamen's green bean pastry (lu dou jiao) is a regional cousin using mung bean paste. The commercial variant omitting egg yolk entirely targets customers who find the salt-sweet contrast too intense.
On the Palate
Where Egg Yolk Pastry sits in the Chinese flavor cloud
Ingredients
Serves 4
How it's made
8 steps · 2 hours
- 130 min
Make water pastry: combine 200 g all-purpose flour, 60 g lard, and 80 ml water; knead until smooth and elastic. Make oil pastry: mix 160 g cake flour and 60 g lard until it just comes together into a crumbly mass. Cover both and rest 30 minutes.
- 210 min
Divide each dough into 16 equal pieces. Flatten a water pastry piece, place an oil pastry piece in the center, and wrap it in completely; pinch the seam shut.
- 38 min
Roll each bundle into a long oval; roll it up from the near end into a tight scroll. Rest 15 minutes, covered.
Watch outKnead until smooth and springy so it stretches without tearing — a stiff, under-kneaded dough cracks along the folds when you shape the pastry.
- 48 min
Turn each scroll 90 degrees, roll out long again, and re-roll into a scroll. Rest another 15 minutes. This second fold builds the full laminated layer count.
- 510 min
Wrap each salted duck egg yolk in 30 g of red bean paste, rolling into a smooth ball.
- 610 min
Gently flatten one pastry scroll, place a bean-yolk ball in the center, gather the edges, and pinch shut. Place seam-side down on a parchment-lined tray. Brush tops with beaten egg yolk and sprinkle sesame seeds.
- 725 min
Bake in a preheated 175°C (350°F) oven for 22–25 minutes until golden and the layers are visible.
Watch outBake until the layers are visibly separating and the top is golden — pull it while pale and the flake never fully sets crisp.
- 810 min
Cool on a rack for 10 minutes before serving; consume within 2 days for peak crispness.
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