In Turkey, there are around 90,000 olive trees. Although the size of the olive industry is very difficult to establish and oil-grade olive production changes according to periodicity of olives fruits, production annually was estimated to be around 106 tones
However, there are about 3500 olive oil mills, operated seasonally from November to March. The basic problems in production of olive oil are related to traditional extraction processes and to the existence of mills with small capacity. Consequently, the olive cake has approximately 10–12% oil content before solvent extraction, and is used as a fuel in the bakeries in these districts. It can be seen that direct combustion is the easiest and the most attractive way of utilization.