Tuna Tataki Recipe

1. Prepare tuna

Pat the tuna loin very dry with paper towels. Trim any sinew or uneven edges so you have a neat rectangular piece approximately 1 to 1.5 inches thick.

2. Season all sides lightly with kosher salt and freshly ground black pepper, pressing gently so the seasoning adheres.

3. Heat a heavy skillet (cast-iron or stainless steel) over high heat until very hot (about 2–3 minutes). Add 1 tablespoon neutral oil and swirl to coat. The oil should shimmer but not smoke heavily.

4. Sear the tuna: place the tuna loin in the hot skillet and sear for 20–30 seconds on each of the four long sides, rotating with tongs, until the exterior is nicely browned but the center remains rare. Total sear time will be about 1.5–2 minutes depending on thickness. Do not overcook — tataki is best with a rare interior.

5. Transfer seared tuna to a cutting board and let rest for 3 minutes to allow juices to settle before slicing.

6. Slice: using a very sharp knife, slice the tuna crosswise into 1/4-inch to 1/3-inch thin slices. Arrange slices on a chilled serving plate, fanning them slightly.

7. Make the ponzu dressing: in a small bowl whisk together 3 tablespoons ponzu, 1 teaspoon mirin, 1 teaspoon light soy sauce, 1 tablespoon fresh lemon juice, 1/2 tablespoon fresh lime juice, and 1/2 teaspoon finely grated fresh ginger until combined. Taste and adjust: if too sharp, add a tiny extra splash of mirin or a pinch of sugar; if too salty, add a little more citrus or water.

8. Let the sauce sit for 2–3 minutes to allow flavors to meld. Reserve about 1 tablespoon for drizzling over the plated tuna and serve remaining in a small ramekin for dipping at the table.

9. Toast sesame seeds in a dry skillet over medium heat for 1–2 minutes, shaking the pan, until fragrant and lightly golden. Remove immediately to stop browning.

10. Scatter the toasted sesame seeds and thinly sliced scallions over the sliced tuna. Add a few microgreens or cilantro leaves for color if using.

11. Drizzle the reserved ponzu lightly over the tuna slices (about 1 tablespoon) and, if desired, a tiny drizzle (1/2 teaspoon) of neutral oil to add sheen.

12. Serve immediately with extra ponzu for dipping, and optional wasabi paste and pickled ginger on the side.