Dragon Roll

Rinse 360g short-grain sushi rice under cold running water until the water runs completely clear (about 3 minutes of rinsing), then cook in a rice cooker with 480ml tap water per standard rice cooker settings. Once cooked, transfer rice to a wide wooden bowl, gently fold in a cooled mixture of 60ml rice vinegar, 25g granulated sugar, and 5g fine sea salt (heated in a small pan over low heat for 1 minute until sugar and salt fully dissolve). Fan the rice continuously for 3-4 minutes until it cools to 23C (room temperature), taking care not to mash or over-stir the grains. Cover the rice with a damp lint-free tea towel to prevent drying until ready to assemble.

Pour 500ml vegetable oil into a deep, heavy-bottomed pot and heat to 175C (350F), verified with a candy thermometer. Pat 8 peeled, deveined shrimp completely dry with paper towels, then make 2 small 5mm cuts on the underside of each shrimp to prevent curling during frying. Whisk 100g tempura batter mix with 120ml ice-cold water until just combined (small lumps are expected; do not overmix, as this creates tough batter). Dip each shrimp fully in batter, lower gently into the hot oil, and fry for 2-3 minutes until pale golden and crisp, then transfer to a wire rack set over a baking sheet to drain for 2 minutes. Fry in 2 batches of 4 shrimp to avoid dropping oil temperature.

Slice 120g pre-cooked unagi into 1cm thick, 10cm long strips, then warm in a preheated 150C (300F) oven for 3 minutes to soften. Cut 50g seedless English cucumber into 10cm long, 1cm thick strips, discarding the soft seedy core. Halve the 150g ripe avocado, remove the pit, peel, and slice into uniform 2mm thin slices, then toss gently with 5ml lemon juice to prevent browning. Wrap a bamboo sushi rolling mat tightly in plastic wrap to prevent sticking, and arrange all prepped fillings, nori sheets, and seasoned rice within easy reach for assembly.

Place 1 full roasted nori sheet shiny-side down on the prepared bamboo mat. Mix 100ml tap water with the remaining 15ml rice vinegar to make hand-washing water, and dip your fingers in this solution to prevent rice from sticking. Spread 1/4 of the seasoned sushi rice (roughly 110g) in an even 5mm thick layer across the entire surface of the nori. Sprinkle 1/4 of the toasted sesame seeds and 1/4 of the tobiko evenly over the rice layer, then gently flip the nori sheet over so the rice side faces down against the mat, and the plain nori side faces up. Lay 2 shrimp tempura, 2 unagi strips, and 2 cucumber strips in a tight, straight line across the horizontal center of the nori.

Lift the bottom edge of the bamboo mat up and over the line of fillings, tucking the edge firmly against the fillings to create a tight core, squeezing gently with even pressure to eliminate any air gaps. Continue rolling the mat forward in a smooth motion until the entire nori sheet is formed into a tight, even cylinder, pressing gently along the length of the mat to set the roll shape. Unwrap the mat to expose the rice-covered log, then lay the thin avocado slices in overlapping, shingle-like rows across the top of the roll to mimic dragon scales, covering the entire top surface. Lay a fresh sheet of plastic wrap over the avocado, then use the bamboo mat to press very gently so the avocado slices adhere smoothly to the rice without mashing.

Remove the top layer of plastic wrap from the roll. Dip a sharp, long-bladed knife in cold water between every cut to prevent sticking, and slice each roll into 6 even pieces, roughly 2.5cm thick. Arrange the sliced pieces on a serving platter with the avocado side facing up, then drizzle 15ml of unagi sauce over each roll, and top with the remaining tobiko and sesame seeds. Serve immediately alongside pickled ginger, wasabi, and soy sauce for dipping, if desired.