Kızılhisar Cup

Kızılhisar Bardağı is a traditional craft product made from red clay in the Serinhisar district of Denizli Province. Registered as a geographical indication in 2025 under Law No. 6769 on Industrial Property, this cup stands as a tangible representation of regional culture and a product of technical mastery, defined by local soil usage, shaping techniques, and firing processes.

Kızılhisar Bardağı (Culture Portal)

Geographical Origin and Material Composition

The production of Kızılhisar Bardağı uses red fatty clay extracted from the Karabastı region and red clayey soil obtained from the Kumlu locality. The iron oxide (Fe₂O₃) content in the soil imparts the vessel’s characteristic red color and durability during firing. Sole use of fatty clay increases the risk of cracking, while its mixture with clayey soil enhances the cup’s ability to retain coolness and improve drinkability.

Production Process

The clay is mixed with water in mud pools and left to rest. Artisans knead the resulting slurry and shape it using a potter’s wheel. Tools such as a comb, yuluk (rib), cylinder, and decorative implements are employed in production. Hand-shaped cups are left to rest for several days before being fired for approximately 18 hours in traditional cup-dome kilns.

Firing Technique: Cup-Dome Kiln

The kilns have a dome-like structure and consist of two sections: a lower chamber where fuel is burned and an upper open dome where the cups are arranged. Heat rises in a controlled manner from bottom to top. Broken fragments of old pottery are placed on top of the cups to balance the firing process. The kiln temperature ranges between 800–1000 ℃, requiring precise control to ensure optimal form and color quality.

Kızılhisar Bardağı (Turkish Patent)

Typology and Technical Features

Kızılhisar Bardağı is produced in four main forms: spouted, handled, handleless, and bowl-shaped. Dimensions are carefully standardized: base diameter 11–13 cm, mouth diameter 5–7 cm, middle diameter 16–18 cm, height 28–32 cm. Attachments such as handles and spouts also follow precise measurements. The durability of the product is directly related to drying duration, clay composition, and firing time.

Impact of Climate and Seasonality

The elevation of Serinhisar district, ranging from 925 to 1000 meters, and its transitional climate directly influence the production process. Rapid drying caused by high temperatures in July and August reduces product quality, while ideal drying conditions in April, May, September and October yield more durable cups. During drying, exposure to wind and excessive sunlight must be avoided.

Monitoring and Protection

The registration rights for Kızılhisar Bardağı belong to the Serinhisar Municipality. Regular inspections are conducted by a board composed of the municipality, chamber of trades, and expert individuals. All production processes must occur within the defined geographical boundaries. The product must bear the inscription “Kızılhisar Bardağı” and the official geographical indication emblem.