Kusshi

Kusshi: A Closer Look

Reviewed by Oyster Tasting Guide editorial team · June 2, 2026

Origin

Deep Bay / Baynes Sound, Vancouver Island, British Columbia

Species

Pacific oyster (Crassostrea gigas)

Grower

Stellar Bay Shellfish Ltd., founded by Keith Reid

Signature

The original tumbled oyster: smooth, deep-cupped shell from mechanical tumbling

Flavor

Clean and mild with cucumber, melon and buttery sweetness; low brine

Name

From the Japanese for 'ultimate' or 'precious'

The Kusshi is proof that how an oyster is grown can matter as much as where. It is a Pacific oyster, Crassostrea gigas, but it is shaped into something distinctive by the hand of its maker. The Kusshi was the original tumbled oyster on the market, immediately recognizable for its smooth, polished, cornucopia-shaped shell and exceptionally deep cup. Its name comes from the Japanese word for 'ultimate' or 'precious,' a nod to the painstaking process behind it.

That process is the work of Keith Reid, who grew up picking oysters off the beach with his father on Vancouver Island and went on to found Stellar Bay Shellfish Ltd. Reid pioneered an intensive mechanical tumbling technique, gently rattling the oysters in high-tech drums every week or two as they grow in the cold, nutrient-rich waters of Deep Bay in Baynes Sound, British Columbia. Each tumble chips away the thin, frilly new shell growth, forcing the oyster to thicken its shell and deepen its cup rather than spreading out and growing long. The result is a small, hard-shelled oyster with a remarkably deep, rounded cup that mimics the prized shape of a Kumamoto, and which Reid's farm grades by size down to the millimeter. The same grower's larger oyster, the Stellar Bay, is simply a Kusshi allowed to get a bit bigger. The tide-tumbling method Reid refined has since been adopted by farms up and down the coast.

Suspended in floating trays rather than grown on the seafloor, Kusshis stay clean and develop plump, ivory meat. That deep cup leaves little room for liquor, so what you get is mostly meat: a generous, pillowy bite that practically fills the shell.

On the palate the Kusshi is mild, clean, and elegant, with low brininess and a soft, almost buttery sweetness. Tasters consistently pull out cucumber and watermelon-rind notes, sometimes a touch of lettuce or melon, finishing fresh and delicate. It is a top choice for people who prefer gentle, low-salt oysters, and like the Kumamoto it makes an excellent introduction for newcomers, even as its refined shape and clean flavor keep it a favorite on West Coast raw bars.