Golabgiri

Golabgiri ("making Rosewater") is a ceremony taking place annually from mid-May to mid-June in Kashan, Isfahan Province, Iran. The ceremony takes place throughout Kashan county, in Ghamsar, Niasar and other villages. During this event, that annually attracts over a million tourists, the juice of red flowers planted in many flower gardens in these areas is prepared by the traditional method of an evaporation system.

...
Wikipedia