Shu Cream Ppang (Korean Custard Cream Bun)
Despite the name, no choux pastry is involved. Cold custard is wrapped in a soft milk-and-butter yeast dough, the seam pinched tightly shut, and the cream bakes sealed inside the bun. Because of the custard, the buns go into an airtight container in the fridge within 2 hours of cooling and should be eaten within 2 days.