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Tunu Ahi (Rapa Nui Hot-Stone-Seared Fish)

Tunu Ahi (Rapa Nui Hot-Stone-Seared Fish)

Created by Chef Makoa

Rapa Nui fish seared on black volcanic stones, salted simply and eaten with kumara by the water. Ahi means fire here, and the old way still fits a weeknight grill.

Main Dishes
Polynesian, Rapa Nui
Weeknight
Outdoor Dining
Comfort Food
20 min
Active Time
45 min cook1 hr 5 min total
Yield4 servings

The canoe carried our family farther than most people can imagine, all the way to Rapa Nui, the eastern corner where the ocean feels like it has no edge. That island is not my home seat, so I come to this tunu ahi with open hands: tunu is to cook or roast, ahi is fire, and the old people there put the day's fish right on volcanic stone by the shore.

The fish teaches you to stop fussing. Dry it, salt it, heat the stone until it can mark the flesh fast, then let the fire speak. The outside takes that dark bite from the basalt, the inside stays moist if you don't bully it, and the whole thing tastes like the ocean came straight to the table with no disguise.

Across the Triangle, the cousins know fire and stone in their own languages. Hawaiʻi has the imu, Sāmoa and Tonga the umu, Tahiti the ahimaʻa, the Cook Islands the umukai, Aotearoa the hāngī, and Rapa Nui its umu pae, the stone earth oven. The umu by any name is one oven. But this tunu ahi is smaller, quicker, everyday, Rapa Nui fish straight to stone, brought forward now on a grill or a cast-iron slab when the shoreline is far away.

So no make it precious. Buy good fish, use a dry food-safe stone, cook it clean, and feed the people standing around you. One ocean, one canoe, one root, and one more cousin's way of letting fire do just enough.

Ingredients

very fresh tuna or sierra fillets or steaks

Quantity

1 1/2 pounds

cut 1 to 1 1/4 inches thick

coarse sea salt

Quantity

1 1/2 teaspoons

plus more for serving

coconut oil or neutral oil (optional)

Quantity

1 tablespoon

for brushing

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