Bulgaria is well-known for being the largest producer of rose oil in the world. At the heart of this industry is the region known as the Rose Valley. The secret to cultivating the highest quality of Bulgarian roses is an art that has been developed over many years, in part thanks to the soil and favorable climate. The highest quality roses are of a sort called “Rosa Damascena”. Rose oil is sometimes referred to as the “liquid gold” of Bulgaria, because of its high price. It is used in many famous brands of perfume, chocolate, liquor, and jam. Rose oil is three times more expensive than gold. It takes 3000 kilos of roses to produce just one liter of rose oil. All flowers are picked by hand and carefully preserved for distillation, with the harvest usually taking place in May. Harvest begins early in the morning, when the dew is still on the roses. In fact, the dew is vital for extracting the rose oil from the flower, and also for the production of rose water. Bulgarian rose oil is one of the essential ingredients in many French perfumes, thanks to its high level of quality. A festival also takes place in the first week of June, coinciding with the flowering period of the roses. There are lots of flowers, colorful costumes and traditional ethnic dances during the festival, whose highlight is the crowning of the Rose Queen, the most beautiful girl in town.