The Italian and Slovene parts of the Karst Plateau (Carso and Kras, respectively) are located on either side of the Italian–Slovene border.
In this area the Terra Rossa is present in part of the municipalities of Sežana, Komen and Kostanjevica, around the villages of Tomaj and Dutovlje.
In Italy, it is present in the area of Monrupino, Sgonico, Duino-Aurisina and in a very limited part of the municipality of Trieste (between Opicina and the Slovenian border).
Roman naturalist Pliny the Elder wrote that puccinum was the favorite of Augustus's wife Livia.
However, it matches also with other pork dishes, sausages, pancetta or cooked ham with horseradish (traditional foods of the Karst Plateau and Istria).