Alentejo, Portugal
The most direct expression of the Portuguese convent egg-and-almond sweet tradition — its name translates as 'heaven's bacon' because the golden, dense, almost trembling egg-almond cake resembles cured fatback in texture and colour. Made from ground almonds, egg yolks, and sugar, with pork lard in the original recipe (replacing butter in modern versions), it is baked until just set, producing a surface that is slightly crisped and golden while the interior remains moist and dense. Toucinho do céu originates from the convent traditions of the Alentejo and the Trás-os-Montes regions, and variations exist across Portugal using different nut ratios, different fat types, and different quantities of egg.
Blanch and grind almonds immediately before use — pre-ground almond flour produces a drier, less flavourful result. The fat (lard or butter) must be incorporated while the sugar syrup is hot — this allows it to emulsify into the mixture. Separate the eggs — the yolks provide richness and colour; a small amount of egg white provides structure. Bake at 170°C for 25-30 minutes — the centre should barely tremble when the oven door is opened.
The lard version is the original and produces a noticeably richer, more complex result than the butter version — try both if the opportunity arises. Serve at room temperature with a glass of moscatel de Setúbal or port wine. Dust with icing sugar only at service — applied earlier, it dissolves. The cake improves overnight as the almond oils redistribute.
Using old almond flour — the oxidised oils produce a flat, slightly rancid taste. Overbaking — the texture becomes dry and cakey. Not lining the tin with greased parchment — the cake sticks badly. Adding too much egg white — the texture becomes too firm and loses the characteristic density.
Leite's Culinaria — Portuguese tradition