Welsh Onion (shiro negi)
Welsh onion (shiro negi) is a staple ingredient in Japanese cuisine. Bungotakada is a major production area for its cultivation and boasts the largest farming area for shiro negi (approximately 400 hectares) in western Japan, and is the third-largest producer in Japan by municipality.
The fields where shiro negi is cultivated are located in the Kuresaki area on sandy soil which was reclaimed from the sea during the Edo period (1603–1868) and the Showa era (1926–1989). In 1967, the reclaimed coastal land was designated a shiro negi production area during the autumn and winter, resulting in a gradual increase of market value for the area over the years.
Bungotakada’s warm climate and soil that is rich in minerals produces firm shiro negi with a slight sweetness. They are at their sweetest from November to March and are a popular ingredient in seasonal nabe hot pot dishes. Recently, it has become popular to eat shiro negi cooked over a fire or grill in the Spanish-style, like a similar Spanish onion known as calçotada. Shiro negi is said to offer various health benefits including antibacterial functions, aiding digestion, and boosting metabolism.