Homemade Masa-Inspired Tuna & 'Ocean Jewels' Tartare

Instructions

1. 1

   Ensure your sushi-grade tuna is very cold. Pat it dry thoroughly with a paper towel. Using a very sharp knife, carefully cut the tuna into small, uniform 1/4-inch (approx. 0.6 cm) dice. Aim for clean cuts to avoid mashing the fish. Place the diced tuna in a medium bowl.

2. 2

   In a small bowl, whisk together the low-sodium soy sauce, toasted sesame oil, finely grated ginger, mirin (if using), and granulated sugar (if using). Stir until the sugar is dissolved.

3. 3

   Pour the prepared sauce over the diced tuna. Gently fold the sauce into the tuna mixture using a spoon or spatula. Mix just until combined, being careful not to overmix, which can bruise the delicate fish.

4. 4

   To plate, place a 2-3 inch (approx. 5-7.5 cm) round ring mold in the center of each chilled serving plate (or on a single large platter if serving family style). Spoon the tuna mixture into the mold, gently pressing it down to form an even layer. Carefully lift the mold.

5. 5

   Generously top each tuna tartare portion with the tobiko or ikura. The roe provides the crucial briny pop and visual appeal that replicates the 'caviar' essence.

6. 6

   Sprinkle the finely minced chives over the top of each tartare for a fresh, aromatic garnish.

7. 7

   Serve immediately with thinly sliced cucumber rounds, nori crisps, or plain unsalted crackers on the side for scooping.