Mooncake hash is the ultimate post-holiday plot twist for your kitchen, turning those leftover Mid-Autumn Festival treats into a sizzling, sweet-and-savory skillet masterpiece. You take rich, dense mooncakes—whether packed with sweet lotus paste, crunchy five-nut mix, or rich salted egg yolk—chop them into bite-sized chunks, and toss them into a hot pan alongside crispy fried potatoes and a dash of warm spices. As the pastry edges get dark and crispy and the sweet fillings melt into a gooey, caramelized glaze over the salty potatoes, you get an addictive contrast of textures and flavors that completely redefines weekend brunch.