The Tarta de Santiago is the sweet of Santiago de Compostela, the city where the Camino ends. The Protected Geographical Indication file records the earliest mention: in 1577, during Pedro de Porto Carrero’s visit to the University of Santiago, a royal cake made of ground almond, sugar and eggs was served, baked and offered whole or in portions.
The batter contains no flour. Ground almond provides body and moisture, the eggs bind, and the sugar sweetens; some recipes add lemon zest or a touch of cinnamon or liqueur. The cake is low, with a thin crust and dense crumb, and it is baked on a thin base or directly in the pan.
The identifying decoration came later. In 1924, the founder of a Santiago pastry shop began covering the cake with powdered sugar using a stencil with the silhouette of the Cross of the Order of Santiago, leaving the cross drawn by the cake’s color. The custom spread through Galician bakeries.
The Protected Geographical Indication Tarta de Santiago, registered in the European Union in 2010, defines the minimum proportion of almond and the permitted ingredients, and covers production throughout Galicia.