A convent-style yolk sponge built to drink in syrup. Its crumb stays light yet deeply syrupy, scented with cinnamon, clove, and pisco, while raisins and almonds provide the classic contrast. An old-fashioned Peruvian dessert that still tastes like a celebration when properly soaked.

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Preheat the oven to 170°C and grease a small rectangular baking dish, about 18 × 18 cm, with the butter. Beat the egg yolks with an electric mixer for 12 to 15 minutes, until they are very pale, thick, and roughly triple in volume; when you lift the beaters, the mixture should fall in a ribbon that remains visible on the surface for a few seconds.
Pour the whipped yolks into the pan immediately and level the surface gently, without banging the pan or overworking the foam. Bake for 18 to 22 minutes, until the top is lightly golden, set to the touch, and springs back slightly when pressed. Remove from the oven and leave it in the pan while you prepare the syrup.
Combine the sugar, water, cinnamon, and clove in a saucepan. Bring to a boil and cook for 8 to 10 minutes, until the syrup is light, glossy, and still fluid enough to soak into the sponge; do not take it to caramel stage. Remove the cinnamon and clove, turn off the heat, and stir in the pisco and raisins.
While the sponge is still warm, mark out 8 portions with the tip of a knife and pour over half of the hot syrup, distributing the raisins as well. Wait 5 minutes for it to absorb, then add the rest gradually; pause between additions if you see liquid pooling. The crumb should become fully moist while still holding its shape.
Rest for 15 minutes, until the syrup settles through the sponge and the dessert is warm or at room temperature. Cut along the marks and finish each portion with the chopped almonds. A good huevo chimbo stays light despite all that syrup: moist to the center, fragrant, and never compact or heavy. And that's it!