Blatni fuži is a traditional pasta variety originating from Istria. This type of pasta is the same as regular fuži, and the only thing that's added is fresh pig's blood because blatni fuži are traditionally made during the annual pig slaughter.
The pasta consists of flour, eggs, salt, and pig's blood. The dough is kneaded, rolled, and cut into squares. Two opposite ends of the squares are pinched together in the direction of the center in order to make the typical fuži pasta shape. Once shaped, blatni fuži are boiled in salted water, drained, and drizzled with oil.