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Ingredients
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Tuna tartare
Tiger's milk (leche de tigre) & ají dressing
Corn & avocado garnish
Finish & serve
Method
Tuna tartare
Prepare tuna
Pat the sushi-grade ahi tuna dry with paper towels. Using a very sharp knife, dice the tuna into 1/4-inch small cubes. Place the diced tuna in a chilled bowl and keep cold while you prepare the dressing and garnishes.
Tiger's milk (leche de tigre) & ají dressing
Make the tiger's milk
In a blender or small bowl, combine the fresh lime juice, fish stock, neutral oil, minced garlic, ají amarillo paste, minced ají or serrano (if using), grated ginger, sugar and remaining 1/4 tsp kosher salt. Blitz or whisk vigorously until emulsified and slightly frothy. Taste and adjust heat or acidity: add more ají for heat, a pinch more sugar to balance, or a splash more fish stock if too tart.
Strain (optional)
If you prefer a smoother leche de tigre, pass the mixture through a fine-mesh strainer, pressing with the back of a spoon to extract all liquid. Keep chilled until assembly.
Corn & avocado garnish
Prepare corn
If using fresh corn, cut kernels from the cob. Heat a small nonstick skillet over medium-high heat, add a light drizzle of oil and sauté the kernels for 2–3 minutes until just blistered and bright. Remove from heat and cool slightly.
Combine avocado
In a small bowl, gently toss the diced avocado with the sautéed corn, lime zest, 1 tsp extra-virgin olive oil and a pinch of salt. Keep chilled until plating.
Finish & serve
Add garnishes
Spoon a portion of the corn-avocado mixture alongside or on top of the tuna. Drizzle reserved 3 tbsp of tiger's milk around and over the tartare. Scatter toasted corn kernels (cancha) for crunch, place microgreens or cilantro leaves on top, and add thinly sliced jalapeño or ají if using.
Final touches
Finish with a tiny drizzle (about 1/2 tsp) of neutral oil over the tuna, a final pinch of flaky sea salt and a twist of freshly ground black pepper. Serve immediately.