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What are Ehime’s heirloom vegetables? Features, season, and ways to eat the 11 items organized by the association (Iyo hikabura, kinukawa eggplant, Shimizu issun) explained

Ehime Prefecture's heirloom vegetables are a group of varieties handed down within the terrain of the Matsuyama Plain, Saijo on the Seto Inland Sea coast, Nanyo along the Uwa Sea, and the mountainous area of the Shikoku Mountains (Kumakogen Town) — including wild perennials such as teiregi.The Japan Traditional Vegetable Promotion Associationorganizes 11 heirloom vegetables of Ehime Prefecture.

We introduce varieties handed down in Iyo — the deep-crimson Iyo hi-kabura, Sho daikon with a red-purple neck, the kinukawa nasu of Saijo, Matsuyama's fava bean “Shimizu issun,” Iyo City's beautifully crimson-purple nishiki ingen, and teiregi, the condiment vegetable of Takai-cho, Matsuyama.

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

Certifying bodyMain 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
Ehime PrefectureThe prefecture operates frameworks such as “Hometown Farm Products.” A “heirloom vegetable” certification system unique to the prefecture was unconfirmed at the time of writing

In this article, we introduce all 11 Ehime Prefecture varieties organized by the Japan Traditional Vegetables Promotion Association.

Ehime's Heirloom Vegetables: A List of 11 Varieties

#ItemCategoryMain growing regionSeason
1Iyo hi-kaburaKabu (deep-crimson oblate)Ishii, Takai, Horie, Hojo, Matsuyama CityLate October–
2Sho daikonDaikon (red-purple neck, white flesh)Matsuyama CityDecember to March
3Ozu imoSatoimo (parent taro edible)Ozu CityDecember–
4Kumakogen Town native “ji-imo”Potato (small, yellow)Kumakogen TownThroughout the prefecture
5Kinukawa nasuEggplant (large ovoid, thin skin)Saijo CityJune to October
6Matsuyama naga nasuEggplant (nakate–late long type)Minami-Iyo, Iyo City; Hojo district; Shusso district; Masaki Town; Toon City, and othersSummer (detailed timing limited)
7Shimizu issunFava bean (heritage variety; current mainstay is “Ryosei issun”)Matsuyama City (Hisae, Yodo, Ono districts, and others; Shimizu-cho is the heritage introduction site)Early–late May
8Nishiki ingenCommon bean (crimson-purple markings)Iyo City (former Nakayama Town, Iyo District)June–September
9Murasaki naga oba takanaLeafy vegetable (takana type)Within the prefecture (specific growing-region info limited)Late November–late March
10TeiregiCondiment vegetable (wild)Takai-cho, Matsuyama CityYear-round
11Kumakogen Town native “ji-kyuri”Cucumber (stubby and thick)Kumakogen Town(seasonal info limited)

A product catalog that shows around 100 items we handle

Agriture, flexibly handling everything from small lots to large lots

乾燥野菜
  • Available from small lots of 100 g
  • We handle heirloom vegetables from across Japan
  • Dried fruit and herbs also supported

The Characteristics and Ways to Eat 7 Main Ehime Heirloom Vegetables

Iyo Hi-Kabura — Matsuyama's Deep-Crimson Oblate Kabu

SeasonLate October–
Growing regionIshii, Takai, Horie, Hojo, Matsuyama City
Well-suited dishesVinegar pickles, asazuke, salad, hi-kabura pickles

Iyo hi-kabura is an oblate native kabu grown in Ishii, Takai, Horie, and Hojo of Matsuyama City, distinguished by a deep-crimson appearance. Vinegar-pickled, its crimson color develops, and it has been handed down as a local pickling ingredient.

Used to color vinegar pickles and asazuke, it also works as an accent of color in salads. In season from late October into winter, it circulates at JA farm stands in Matsuyama City.

Sho Daikon — The Matsuyama Daikon with a Red-Purple Neck

SeasonDecember to March
Growing regionMatsuyama City
Well-suited dishesSimmered dishes, grated daikon, pickles, salads

Sho daikon is a native daikon handed down for about 150 years in Matsuyama City (the former Sho district of Hojo City), its variety name deriving from the former Sho district of Hojo City, its growing region (Japan Traditional Vegetables Promotion Association). Its strong points are a red-purple neck, white flesh, and fine-grained flesh. Pickled, the red-purple of the neck develops into pink, and it can also be used for color when cooking.

Used in simmered dishes, grated, pickles, and salad, it ships in season December–March from farm stands in Matsuyama City.

Kinukawa Nasu — Saijo's Broad-Shouldered Large Ovoid Eggplant

SeasonJune to October
Growing regionSaijo City
Well-suited dishesDengaku, grilled eggplant, agebitashi, simmered dishes

Kinukawa nasu is a native eggplant grown in Saijo City, distinguished by a broad-shouldered large ovoid shape and thin skin. Because the skin is thin, the melting texture of the flesh comes alive in dengaku, grilled eggplant, and deep-fried and marinated dishes.

In season June–October, it circulates at JA farm stands in Saijo City.

Shimizu Issun — Matsuyama's Heritage Fava Bean

SeasonEarly–late May
Growing regionMatsuyama City (Hisae, Yodo, Ono districts, and others; Shimizu-cho is the heritage introduction site)
Well-suited dishesBoiled with salt, bean rice, tempura, soup

Shimizu issun is a heritage fava bean handed down in Matsuyama City (Hisae, Yodo, Ono districts, and others). As seed-saving farmers advanced selection for large-grained seeds, the proportion of two-bean pods rose and the appearance came to look inferior, so it has now shifted to fixed three-bean-pod varieties such as “Ryosei issun” and “Uchikoshi issun” (Japan Traditional Vegetables Promotion Association). Its strong points are the fluffy texture and rich bean flavor unique to large grains.

Salt-boiling is a way to enjoy the bean's own flavor, and it also suits mame-gohan, tempura, and soup. It ships for a short period in early–late May at JA farm stands in Matsuyama City.

Nishiki Ingen — Iyo City's Crimson-Purple-Marked Common Bean

SeasonJune–September
Growing regionIyo City (former Nakayama Town, Iyo District)
Well-suited dishesSimmered dishes, salad, dressed dishes, bento color

Nishiki ingen is a native common bean grown in Iyo City (former Nakayama Town, Iyo District), its strong point a distinctive appearance with crimson-purple markings on the pod and seeds. It is a regional variety used for color in simmered dishes and salads.

It is used in a wide range of dishes — simmered dishes, dressed dishes, salads.

Teiregi — The Wild Condiment Vegetable of Takai-cho, Matsuyama

SeasonYear-round
Growing regionTakai-cho, Matsuyama City
Well-suited dishesCondiment, soba garnish, sashimi garnish

Teiregi is a wild condiment vegetable found at spring-water sites in Takai-cho, Matsuyama City, its formal name “oba tanetsukebana (Cardamine scutata).” A perennial of the bittercress genus in the brassica family, it is distinguished by fragrance and a sharp pungency (Japan Traditional Vegetables Promotion Association). Locally it has been handed down as a condiment for dishes.

Used as a condiment for soba and sashimi, it is a plant seen year-round, but its cultivation and distribution are limited, and it is a variety often gathered around the spring-water sites of Takai-cho, Matsuyama City.

Ozu Imo — The Parent-Taro-Edible Satoimo with Little Earthy Smell

SeasonDecember–
Growing regionOzu City
Well-suited dishesSimmered dishes, dengaku, imo-ni, fukumeni

Ozu imo is a satoimo grown in Ozu City, distinguished by little earthy smell and the fact that even the parent taro can be eaten. A native taro-line variety, its texture comes alive in simmered dishes, dengaku, and imo-ni.

Shipping begins in December, and it circulates at JA farm stands in Ozu City.

Other Varieties

ItemGrowing regionFeatures
Matsuyama naga nasuMinami-Iyo, Iyo City; Hojo; Shusso district; Masaki Town; Toon City, and othersA nakate–late long eggplant, a Matsuyama native variety whose production area grew from the Minami-Iyo district of Iyo City (JA Zennoh Ehime)
Kumakogen Town's ji-imoKumakogen TownA small potato with yellow skin and flesh, strongly sticky and resistant to crumbling
Kumakogen Town's ji-kyuriKumakogen TownA native variety with a thick, stubby shape (detailed information limited)
Murasaki naga oba takanaWithin the prefecture (specific growing-region info limited)A takana-type leafy vegetable in season late November–late March

A product catalog that shows around 100 items we handle

Agriture, flexibly handling everything from small lots to large lots

乾燥野菜
  • Available from small lots of 100 g
  • We handle heirloom vegetables from across Japan
  • Dried fruit and herbs also supported

FAQ

Does Ehime Prefecture have an official heirloom-vegetable certification system?

A “heirloom vegetable” certification system unique to Ehime Prefecture is unconfirmed at the time of writing. In this article we introduce the 11 native varieties of Ehime Prefecture organized by the Japan Traditional Vegetables Promotion Association.

What is the “hi” (scarlet) color of Iyo hi-kabura?

Iyo hi-kabura is an oblate kabu whose skin develops a deep-crimson color — the origin of the “hi” (scarlet) in its name. Vinegar-pickled, it becomes an even more vivid crimson, and it has been handed down as a traditional pickling ingredient of the Matsuyama region. In season late October–winter, it ships from JA farm stands in Matsuyama City.

What makes Shimizu issun different from other fava beans?

Shimizu issun is a heritage native fava bean handed down in Matsuyama City (Hisae, Yodo, Ono districts, and others; Shimizu-cho is the introduction site), and today's mainstay variety is the “Ryosei issun” line (Matsuyama City official). Shipped in the short season of early–late May, its large-grained fluffy texture and rich bean flavor can be enjoyed salt-boiled, in mame-gohan, or as tempura.

What kind of plant is teiregi?

Teiregi is a wild condiment vegetable found at spring-water sites in Takai-cho, Matsuyama City, its formal name oba tanetsukebana (a perennial of the bittercress genus in the brassica family). Distinguished by fragrance and a sharp pungency, it has been used locally as a condiment for soba and sashimi. It's a plant seen year-round, but its cultivation and distribution are limited, and gathering and obtaining it center on the Takai-cho area of Matsuyama City.

What kind of condiment is teiregi?

Teiregi (oba tanetsukebana, of the bittercress genus in the brassica family) is a wild condiment leaf used mainly around Matsuyama City, distinguished by a faint pungency and a fresh fragrance. Used as a sashimi garnish, in dressed dishes, and to add fragrance to clear soups, it is rooted in Matsuyama's food culture as an early-spring seasonal vegetable.

Summary

Ehime's heirloom vegetables are 11 varieties handed down centered on the Matsuyama Plain in Iyo City, Saijo City, Ozu City, Kumakogen Town, and elsewhere. From the red-purple-hued Iyo hi-kabura and Sho daikon, to the summer vegetables kinukawa nasu and Matsuyama naga nasu, the beans Shimizu issun and nishiki ingen, the taros Ozu imo and ji-imo, the leafy vegetables teiregi and murasaki naga oba takana, and the native ji-kyuri — a varied lineup gathers by region.

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    小島 怜's avatar Rei Kojima Agriture CEO

    CEO of Agriture Inc. Runs a contract processing and OEM business centered on dried vegetables and dried fruit. In partnership with farmers within Kyoto Prefecture, he pursues “sustainable food distribution” through the use of non-standard vegetables and support for sixth-industrialization. Drawing on extensive hands-on experience at manufacturing sites, he provides support that walks alongside every business considering OEM—from product planning and prototyping to small-lot handling, packaging design, and sales-channel development.

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