Yamauchi Kabura

Yamauchi Kabura is a turnip variety cultivated in the Yamauchi area of Wakasa-cho, Mikatakaminaka District, Fukui Prefecture, Japan, and registered under the Japan GI (Japan GI mark) system as a geographical indication product.

The product is based on a local cultivar known as Yamauchi kabura and is registered under registration number 16 in the Vegetables main class, within the category of vegetables / cereals / legumes. Yamauchi Kabura is defined by its morphological characteristics, cooking properties, and region-specific seed management practices.

Yamauchi Kabura exhibits distinct morphological differences from the commonly known round and smooth-skinned turnips:

• Shape: Unlike the typical round form of turnips, Yamauchi Kabura has a conical shape.

• Skin: Rather than a smooth surface, its skin features numerous indentations and fibrous roots.

• Internal Structure: The flesh is dense and firm.

• Leaves: The leaves are quite large, reaching lengths of 60 to 70 cm. They are described as "plum-shaped" (i.e., elongated elliptical) and serrated in form. Visually, they resemble the Japanese vegetable known as "nozawana" and are suitable for use in cooking as turnip greens.

Both the root and leaves of Yamauchi Kabura are used in traditional Japanese cuisine, particularly in the preparation of miso soup. In this application, unlike ordinary turnips which tend to disintegrate and turn to pulp during cooking, Yamauchi Kabura is noted for retaining its structural integrity when cooked.

It is also commonly prepared as a salted pickle. In this method, finely chopped leaves and root sections cut in a fan shape are pickled with salt. This preparation is said to enhance the crisp texture of Yamauchi Kabura, particularly its root portion.

The Yamauchi kabura cultivar, which forms the basis of Yamauchi Kabura production, is geographically restricted exclusively to the designated production area (the Yamauchi region); it is not cultivated outside this area.

To ensure the continuity and purity of the variety, seeds are collectively collected and managed by local farmers engaged in its production. A specific selection process is applied for seed selection:

1. Selection Time: Around December, parent plants intended to produce seeds for the next season are selected.
2. Selection Criteria: Turnips meeting defined conditions are chosen. These conditions include: a good conical shape, a diameter of 80 mm or greater, a high bulb portion, angular shoulders, numerous fibrous roots, and a slight greenish tint from the shoulders toward the bulb.
3. Replanting and Isolation: The selected turnips are replanted in the field. To prevent cross-pollination with other turnip varieties, these seed plants are grown in enclosed fields surrounded by insect-repellent nets.
4. Seed Harvest: The production and harvest of Yamauchi kabura seeds occur around the end of May.

The Yamauchi kabura variety is a traditional cultivar of the Yamauchi region. A document from 1916 titled "Toba Village Magazine" states: "High-quality vegetables (leafy vegetables) are cultivated, and the name Yamauchi Kabura has been widely known since ancient times."^【1】 This record indicates that the variety has been cultivated since the Meiji period (1868–1912).

According to recent producer reports, some farmers were cultivating the variety on a small scale using their own seeds by the late 1950s. However, production was temporarily suspended in 1987 due to the aging of producers.

In subsequent years, with the renewed interest in traditional vegetables, cultivation has been restarted since 1996, centered on existing producers. From that date to the present, the cultivated area has expanded steadily.