Ayu — Sweet Fish and Summer River Cuisine · The Japanese Canon

I

Origin

Japan — freshwater fishing traditions of mountain river regions; Gifu prefecture's cormorant fishing (ukai) for ayu is documented since at least the 7th century CE

II

Description

Ayu (sweetfish, Plecoglossus altivelis) is one of Japan's most celebrated seasonal fish — a small freshwater fish that migrates from sea to rivers in spring and is consumed through summer before spawning in autumn. The name 'sweet fish' refers to the remarkable watermelon-like aroma of the fresh fish and its delicate, slightly sweet flesh — a scent and flavour impossible to describe adequately and unforgettable once experienced. Ayu are caught by traditional fishing methods including a fishing-lure technique called tomozuri (using a tethered live ayu to attract others, since ayu are highly territorial and attack competitors) and fishing by hand from rocky mountain streams. The fish is almost always cooked whole — salt-grilling (shioyaki) is the canonical preparation, where the fish is salted heavily, skewered on stainless steel or bamboo to suggest the swimming posture (naminari no kushiuchi — wave-form skewering), and grilled over charcoal until the skin is crisp and the interior just cooked. The proper eating method is to eat the entire fish including head, fins, tail, and intestine (hara-wata) — the bitter intestines are considered a delicacy, the culinary complement to the sweet flesh. Premium ayu from clean, fast-flowing rivers (Yoshino-gawa in Nara, Shimanto-gawa in Kochi, Nagara-gawa in Gifu) command extraordinary prices. Ayu season defines summer dining in Japan's inland regions.

III

The Thread

—French Alpine stream trout preparations share ayu's philosophy of letting extremely fresh, small river fish speak with minimal intervention — meuniere's butter and lemon additions are the French equivalent of ayu's salt and tade su, both traditions recognising that quality freshwater fish requires almost nothing. French

—Navarran trout preparations using the same whole-fish salt-grilling approach as ayu shioyaki reflect the universal recognition across mountain river cultures that small, fresh trout and related species are best cooked whole over fire with salt as the only seasoning. Spanish

IV

Flavour Context

Fresh wild ayu is one of the most specific flavour experiences in any food culture — the watermelon-cucumber aroma is immediately identifiable, the flesh sweet and delicate, the slight bitterness of the intestines providing a counterpoint that makes each bite a complete flavour statement.

Pillars V — VII

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