Kulen, Slavonia's spicy wood-smoked sausage, has many producers in Slavonia, but Mathias is the best there is and available in higher-end grocery stores. This little retail store about 16km (10 miles) southeast of Vukovar is the best place to find the delicacy, which is made only in Slavonia. Kulen production is a fairly complicated and expensive affair; Mathias's kulen sells for about 100kn per pound.