What are Nagasaki’s heirloom vegetables? Features, season, and ways to eat the 16 “Nagasaki heirloom vegetables” (Unzen kobu takana, Nagasaki hakusai, Karako lotus root) explained

Nagasaki Prefecture's heirloom vegetables are a group of varieties grown in the mountainous areas of Nagasaki City, the Isahaya plain, Unzen-Shimabara, Hirado-Iki, Saikai City, and elsewhere (including items introduced after the war).The Japan Traditional Vegetable Promotion Associationorganizes 16 heirloom vegetables of Nagasaki Prefecture.

We introduce items handed down in Nagasaki, including Unzen kobu takana, NagasakiNapa cabbage(tojin-na), Karako renkon, Nagasaki aka-kabu, Hirado no kibiki kabu, and Isshu wase ninniku.

The definition of "heirloom vegetable" and the scope of this article

Certifying body	Main criteria
Kyoto Prefecture "Kyoto Heirloom Vegetables"	Cultivation history predating the Meiji era, covering the entire prefecture
Osaka Prefecture "Naniwa Heirloom Vegetables"	Cultivated within Osaka Prefecture from roughly 100 or more years ago
Nagano Prefecture "Shinshu Heirloom Vegetable Certification System"	Cultivation, food culture, and varietal traits from before the 1955–1964 period
Nagasaki Prefecture	No certification system of the prefecture's own has been confirmed as of this writing. The Japan Heirloom Vegetable Promotion Association organizes 16 heirloom vegetables

This article introduces all 16 heirloom vegetables of Nagasaki Prefecture organized by the Japan Heirloom Vegetable Promotion Association.

A list of Nagasaki's 16 heirloom vegetables

Root vegetables

Item	Features	Growing region	Season
Isshu wase ninniku	Small and white, about 12 cloves, mild	Iki City	April to June
Oshoga	Large rhizome, strong aroma and pungency	Toishi, Nagasaki City, and elsewhere	November
Karako renkon	Square and flat, grown in peat layers, a firm bite and a distinctive stickiness	Karako, Moriyama-cho, Isahaya City	September–March
Kibiki kabu	Reddish-purple and white, the root bends like a cow's horn	Ono, Hirado City	October–November
Nagasaki aka-kabu	Deep reddish-purple, white flesh, tender and sweet	Nishiyama-koba, Nagasaki City, and elsewhere	November to January
Nagasaki beni-daikon	A type of kabu, a vivid crimson	Nakao, Nagasaki City, and elsewhere	Garden pea

Leafy greens

Item	Features	Growing region	Season
Unzen kobu takana	A large white lump on the midrib; the young greens are pungent	Azuma-cho, Unzen City	December to March
Tsujita hakusai	Rounded heading, thick leaf flesh, a good bite	Nishiyama-koba, Nagasaki City	November–December
Nagasaki hakusai (tojin-na)	Non-heading, leaves stand upright and open outward (Nagasaki City official); tender, also good for pickles/simmered/stir-fried	Nagasaki City	November–February (harvest centered on November–December, Nagasaki City official)
Nagasaki takana	Narrow, crinkled leaves, a mustard-green flavor	Nishiyama-koba, Nagasaki City, and elsewhere	Harvest November–February, spring crop late April–early September (prefecture official and association)
Nagasaki wakegi	Strong bulb-dividing, tender, richly aromatic	Tazuhara, Nagasaki City, and elsewhere	Autumn to spring (October–March)
Natsu-negi	Grown by division, rich in flavor and aroma	Tazuhara, Nagasaki City, and elsewhere	April to November

Fruit vegetables and others

Item	Features	Growing region	Season
Saikai eda-ore-nasu	A round, large eggplant, usable widely—fresh, grilled, simmered, pickled	Saikai-cho, Saikai City, and elsewhere	July–November
Nagasaki naga-nasu	Deep black-purple, 35–40 cm, pairs well with oil	Higashi-Nagasaki, Nagasaki City	June to October
Konnyaku-imo (Takaki-cho)	A native konnyaku potato (tuber). Grown and processed locally, distributed as konnyaku	Takaki-cho, Isahaya City	October–November
Mochi-tomorokoshi	A native glutinous variety, a chewy texture	Takaki-cho, Isahaya City	August

The characteristics and preparation of 7 representative Nagasaki heirloom vegetables

Unzen kobu takana — a distinctive takana with a white lump on the midrib

Season	December to March
Growing region	Azuma-cho, Unzen City
Well-suited dishes	Takana pickles, rice balls, stir-fries, fried rice

Unzen kobu takana is a native takana grown in Azuma-cho, Unzen City, characterized by a shape in which a large white lump forms on the midrib (the central vein) of the leaf. The young greens have a distinctive pungency, and the grown leaves are thick with a satisfying bite. Unzen kobu takana pickles have long been used at Nagasaki tables.

It is processed after the December–March harvest as takana pickles, and year-round shipping is centered on processed goods (pickles and the like).

Nagasaki hakusai (tojin-na) — a versatile Chinese cabbage that stands upright and opens outward without heading

Season	November–February (harvest centered on November–December, Nagasaki City official)
Growing region	Nagasaki City
Well-suited dishes	Pickles, simmered dishes, stir-fries, zoni

Nagasaki hakusai also goes by the name "tojin-na," and Nagasaki City's official materials describe it as "non-heading, with leaves that stand upright and open outward." With a tender leaf quality, it can be used widely in pickles, simmered dishes, and stir-fries, and is also used as an ingredient in Nagasaki zoni.

It ships from JA farm stands within Nagasaki City in its season of November–February (harvest centered on November–December) (Nagasaki City official).

Karako renkon — the peat-layer lotus root of Moriyama, Isahaya

Season	September–March
Growing region	Karako, Moriyama-cho, Isahaya City
Well-suited dishes	Simmered dishes, sunomono, kinpira, renkon manju

Karako renkon is a lotus root grown in Karako, Moriyama-cho, Isahaya City. Because it grows in peat-layer soil, it takes on a square, somewhat flat shape. A firm bite and a sticky texture are its hallmarks.

Usable in a wide range of dishes—simmered dishes, sunomono, kinpira, renkon manju—it is distributed over the long span of September–March at Isahaya City farm stands such as "Mogitate-ichi."

Nagasaki aka-kabu — the deep reddish-purple kabu of Nishiyama-koba, Nagasaki

Season	November to January
Growing region	Nishiyama-koba, Nagasaki City, and elsewhere
Well-suited dishes	Vinegar pickles, asazuke, salad, kabura-mushi

Nagasaki aka-kabu is a kabu grown in Nishiyama-koba, Nagasaki City, characterized by a deep reddish-purple outer skin, white flesh, a tender texture, and strong sweetness. Vinegar-pickled, it develops a vivid crimson color.

It is distributed at JA farm stands within Nagasaki City in its season of November–January.

Kibiki kabu — the two-color reddish-purple-and-white kabu of Hirado

Season	October–November
Growing region	Ono, Hirado City
Well-suited dishes	Vinegar pickles, asazuke, simmered dishes, pickles

Kibiki kabu is a native kabu grown in Ono, Hirado City, characterized by a two-color reddish-purple-and-white appearance and a distinctive shape in which the root bends like a cow's horn.

Used in vinegar pickles, asazuke, and simmered dishes, it is distributed at farm stands within Hirado City in October–November.

Isshu wase ninniku — Iki's mild native garlic

Season	April to June
Growing region	Iki City
Well-suited dishes	Fresh eating, foil-grilled, stir-fries, condiment

Isshu wase ninniku is a native garlic grown in Iki City, characterized by a small, white bulb, about 12 cloves, and a mild flavor free of strong pungency.

Usable widely—fresh, foil-grilled, in stir-fries, and as a condiment—it is distributed at farm stands within Iki City in its season of April–June.

Nagasaki naga-nasu — the 35–40 cm long eggplant of Higashi-Nagasaki, Nagasaki

Season	June to October
Growing region	Higashi-Nagasaki, Nagasaki City
Well-suited dishes	Stir-fries, age-bitashi, mabo-nasu, dengaku

Nagasaki naga-nasu is a deep black-purple long eggplant grown in Higashi-Nagasaki, Nagasaki City, characterized by a length of 35–40 cm. It pairs well with oil, and its tender flesh suits heated dishes.

Its size and tenderness come into their own in stir-fries, age-bitashi, mabo-nasu, and dengaku.

How to buy Nagasaki's heirloom vegetables

Item	Main sources	Timing
Unzen kobu takana	JA farm stands within Unzen City, pickles year-round	December to March
Nagasaki hakusai (tojin-na)	JA farm stands within Nagasaki City	November–February (Nagasaki City official)
Karako renkon	Isahaya City "Mogitate-ichi" and around Moriyama-cho	September–March
Nagasaki aka-kabu	Around Nishiyama-koba, Nagasaki City	November to January
Kibiki kabu	Farm stands in Hirado City	October–November
Isshu wase ninniku	Farm stands in Iki City	April to June
Nagasaki naga-nasu	JA farm stands in Higashi-Nagasaki, Nagasaki City	June to October

FAQ

Summary

Nagasaki's heirloom vegetables number 16 items spread across Nagasaki City, Isahaya, Unzen, Hirado, Iki, and Saikai. Unzen kobu takana, Nagasaki hakusai (tojin-na), Karako renkon, Nagasaki aka-kabu, kibiki kabu, Isshu wase ninniku, and Nagasaki naga-nasu are distributed as representative items.

References / information sources

• Japan Heirloom Vegetable Promotion Association "Nagasaki Prefecture"
• National Agriculture and Food Research Organization Genebank "Native Variety Database"

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