Ono Asari Clam (Hiroshima): season, origin and where to buy

Official registration details (MAFF)

The registered description as published by the Ministry of Agriculture, Forestry and Fisheries.

Characteristics

Ono Asari is a variety of clam notable for its large size. Shell sizes are typically 35 mm long or more, some over 45 mm. The flesh is thick, plump, strong in umami, and produces excellently rich-tasting broth. It requires minimal purging and the quality is consistent. It is traded at high prices reflecting its high rating by users as a cooking ingredient that complements any dish both visually and taste-wise.

Link with the production area

The quiet waters of Onoseto Strait are favorable for the growth of bivalves with superior qualities. This is because phytoplankton (microalgae), which feed the clams, are in constant supply, thanks to tidal flows from Seto, and inflows of subsoil water and river water from the lush woodlands of Miyajima. Local measures are in place whereby only clams sufficiently large are shipped. This involves a unique method of dividing tideland into plots of shellfishing grounds, which are each allocated to and managed by a producer.

Characteristics and link with the area: Ministry of Agriculture, Forestry and Fisheries website (https://www.maff.go.jp/e/policies/intel/gi_act/register/s89.html)

Where to buy

As a rule, only products that meet the registered standard may use a GI name (with exceptions such as prior use). Check for the GI mark and the place of origin to tell it apart from ordinary products with similar names.

Find on furusato nozei (opens in a new tab)

These links go to Japanese-language shops; check whether they ship overseas.

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FAQ

Large asari clams from the Ono Strait in Hatsukaichi City, Hiroshima Prefecture, across from Miyajima. Most shells are 35 mm or longer, and the plump, thick meat has strong umami and makes a rich broth. Tidal flats are divided into plots managed by individual fishers, so the clams are grown large before shipping.

Ono Asari Clam is produced in Hatsukaichi City, Hiroshima Prefecture.

Look for it via furusato nozei (hometown tax donation). Check the GI mark and the place of origin before you buy.

Ono Asari Clam was registered as a Geographical Indication on December 10, 2019 (Registration No. 89). The registered producer group is Onocho Fisheries CooperativeOno Fisheries CooperativeHamakebo Fisheries Cooperative.