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Ingredients
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Toro Tartare
Nikiri Soy Sauce (Sweet Soy Glaze)
Charcoal Seared Finish & Assembly
Method
Toro Tartare
- 1
Prep and mix toro
Keep the toro very cold. Using a sharp knife, dice the toro into small uniform 3-4 mm cubes. Place diced toro in a chilled bowl. Add the minced shallot, grated ginger, minced nori, neutral oil, kosher salt, and freshly ground black pepper. Gently fold the ingredients with a rubber spatula 8–10 times to combine without bruising the fish. Taste and adjust salt if needed. Fold in the sliced chives last. Cover and refrigerate while you prepare the nikiri.
Nikiri Soy Sauce (Sweet Soy Glaze)
- 2
Make nikiri
Combine light soy sauce, mirin, sake, and sugar in a small saucepan. Bring to a very gentle simmer over medium-low heat, stirring to dissolve the sugar. Allow to reduce slightly for 2–3 minutes until the mixture is glossy but still pourable. Remove from heat and let cool to room temperature. Transfer to a small bowl. Taste and adjust balance — it should be slightly sweeter and more rounded than plain soy. Keep at room temperature.
Charcoal Seared Finish & Assembly
- 3
Prepare bases
If using cooked sushi rice, shape into 8 small oblong nuggets or rounds (about 1–1.25 tablespoons rice each). Lightly brush each rice piece with toasted sesame oil to add flavor and help charring. If using toasted rice cakes (kami), ensure they are bite-sized and crisp.
- 4
Assemble tartare on bases
Using a ring mold or spoon, portion about 1 oz (30 g) of toro tartare onto each rice base, forming a compact mound about 1/2 inch high. Gently press to adhere.
- 5
Apply nikiri and sear
Lightly brush the top of each toro mound with a thin layer of the nikiri soy (about 1/2 tsp per piece). Using a culinary blowtorch, quickly char the surface of the toro until you get faint caramelization and a light smoky crust — 5–8 seconds per piece at medium flame. If you have access to charcoal: heat binchotan until glowing and use a metal skewer or mesh and invert briefly to impart an intense charcoal kiss, but be careful to avoid overcooking. The interior should remain raw and buttery.
- 6
Finish and garnish
Immediately after searing, sprinkle a very light dusting of aonori over each piece (about a pinch, ~1/8 tsp). Top each with a small sliver of pickled ginger and/or one microgreen or mitsuba. Optionally drizzle any remaining nikiri sparingly around the plate, not directly over fish, to avoid overpowering saltiness.
- 7
Serve
Serve the charcoal-seared toro kami immediately so the contrast of warm seared exterior and cold buttery interior is preserved. Provide soy and wasabi at the table if desired.