In one of the oldest Slavic settlement in the region, near Pančevo, archaeologists discovered that the main food were grains and millet, but some meat was prepared, too. However, findings in some other parts (village of Mušići, in the Drina river valley), show much higher share of meat in the diet (cows, game, sheep, goats, poultry). Later, the agriculture barely covered the needs of the total population and while the rich ones enjoyed in luxury, poor ones were constantly on the brink of starvation. Once vast forests were still home of the now extinct aurochs and wisent, which today survived only in Białowieża Forest, on the Poland-Belarus border. As population grew, especially from the 13th century onwards, the forests were massively cut down to clear land for the cultivation, so the natural world looked completely different in Serbia in the 13th than in the 15th century. In time, the agricultural tools were getting more sophisticated and the use of iron plow and fertilizers spread, which, on the other hand, further accelerated the clearing of the forests. Word "hrana", meaning food, remained in use today, but some other names for food included "pišta" (which disappeared from language) and "krma" (which evolved in "krmivo", fodder). Name used for dish in general was "jedenie" (modern "jelo"; "jedenje" means "eating"), lunch was "obed" which today means a meal in general (lunch itself is "ručak"), while dinner was called the same as today, "večera". The vegetables were called "zelje", which is today a name for patience dock. Onions and radishes were called "hot "zelje"". With the gradual arrival of the Ottomans to the Serbian borders, a cultivation of rice was introduced in border areas. Visiting Serbia in 1433, during the reign of despot Đurađ Branković, Burgundian Bertrandon de la Broquière wrote: "there is a town called Niš, in a very beautiful region, where rice grows a lot".