Born behind monastery walls
Before 1834, monks at Lisbon's Jerónimos Monastery used leftover egg yolks — whites went to starching habits — to bake little custard tarts. When the monastery closed, the recipe walked next door and became Pastéis de Belém, the most guarded dessert secret in Portugal.
Everyone else's version is called pastel de nata, and the world is better for all of them: caramel-blistered custard in ferociously crisp pastry.
Ours honors the blister. By the piece.