The prestigious Danish winemaker Peter Sisseck, known for his Pingus and Flor de Pingus wines (DO Ribera del Duero), with prices of more than a thousand euros, rules out "making wines in Priorat because the Catalan designation of origin has a good part of the slate soil", taking into account that he is specialized in calcareous soil and, He knows that the DO Montsant does have limestone soil, but he also rules it out..