Patatas a la riojana are the dish named after La Rioja and the one chosen to represent it in the postal stamps series produced with the Royal Academy of Gastronomy. La Rioja’s gastronomy guide presents it as a traditional recipe of the region, without a specific city of origin: a country dish, from vineyard and field workers.
The secret is the cut. The potatoes are not sliced all the way through with the knife: you start the cut and break off the piece, a technique called chascar. The irregular surface releases starch during cooking and thickens the broth.
In a sofrito of onion, garlic and pepper, sliced Riojan chorizo is added, protected by a geographical indication, along with paprika and the pulp of the choricero pepper. The potatoes cook in that base, covered with water, until tender and the broth has thickened.
The dish is brought to the table in a bowl or deep plate, with plenty of broth and bread for dipping. It is simple food, very common in the bars and eating houses of Logroño and the wine towns.