Sesame-Crusted Seared Ahi Tuna with Ponzu Sauce

Ingredients

For the Tuna

• 1 lb (450 g) sushi-grade ahi tuna loin

• 2 tbsp black sesame seeds

• 2 tbsp white sesame seeds

• 1 tbsp vegetable oil

• Salt and freshly ground black pepper

For the Ponzu Sauce

• 3 tbsp soy sauce

• 2 tbsp fresh lemon juice

• 1 tbsp rice vinegar

• 1 tbsp mirin

• 1 tsp sesame oil

• 1 tsp grated fresh ginger

• 1 tsp honey (optional)

Garnish

• Microgreens

• Sesame seeds

• Thinly sliced scallions

• Pickled ginger (optional)

Instructions

Step 1: Prepare the Sauce

In a small bowl, whisk together the soy sauce, lemon juice, rice vinegar, mirin, sesame oil, ginger, and honey.

Refrigerate until ready to serve.

Step 2: Coat the Tuna

Pat the tuna dry with paper towels.

Season lightly with salt and black pepper.

Mix the black and white sesame seeds on a plate, then press the tuna evenly into the seeds until all sides are coated.

Step 3: Sear the Tuna

Heat the vegetable oil in a heavy skillet over high heat.

Sear the tuna for 30–45 seconds per side, leaving the center rare.

Immediately transfer to a cutting board and let rest for 5 minutes.

Step 4: Slice

Using a very sharp knife, slice the tuna into ¼-inch (6 mm) thick pieces.

Arrange over a pool of ponzu sauce.

Garnish with microgreens, sesame seeds, and sliced scallions.

Serving Suggestions

Serve with:

• Steamed jasmine rice

• Sushi rice

• Seaweed salad

• Pickled ginger

• Wasabi

• Cucumber salad

• Edamame

Tips

• Use only sushi-grade tuna for this recipe.

• The skillet should be extremely hot to achieve a crisp sesame crust while keeping the center rare.

• Slice with a long, sharp knife in one smooth motion for clean edges.

• Chill the tuna before searing for the best texture and presentation.

Prep Time: 15 minutes
Cook Time: 3 minutes
Total Time: 18 minutes
Servings: 4 appetizer servings