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1
Cook and Season the Sushi Rice
20 Mins
Boiling, 100°C (212°F)
Rinse the rice in cold water, changing the water until it runs clear. Cook with 360 ml (1 1/2 cups) of water: bring to a boil, cover, and simmer on the lowest heat for 12 minutes, then rest, covered, for 10 minutes. Warm the rice vinegar with the sugar and salt until dissolved, then fold it through the hot rice with a cutting motion and fan the rice until it is just warm and glossy.
Do not stir the rice in circles — that crushes the grains. Slice through it with a rice paddle and fan it to cool.
Done when: The rice is glossy, separate-grained and just warm to the touch.
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2
Make the Spicy Tuna
10 Mins
Chilled, below 4°C (40°F)
Dice the cold tuna into 5 mm pieces and put it in a chilled bowl. Stir in the mayonnaise, sriracha, sesame oil and soy sauce, then fold in the chopped spring onion. Taste and add a little more sriracha if you want more heat. Keep the bowl in the fridge until you roll.
Cut the tuna with a single clean stroke per piece — sawing tears the flesh and makes the filling mushy.
Done when: The tuna is evenly coated in a pink-orange sauce, with visible dice, not a paste.
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3
Set Up the Rolling Station
5 Mins
Room temperature, about 20°C (68°F)
Wrap the bamboo mat in cling film so the rice does not stick to it. Put a small bowl of water mixed with a splash of rice vinegar beside you for wetting your hands and the knife. Lay out the nori, the rice, the tuna mixture, the cucumber batons and the avocado wedges within reach.
Everything in reach before you start — once your hands are covered in rice, you cannot go looking for the cucumber.
Done when: The mat is wrapped, your water bowl is full, and every filling is cut and ready.
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4
Roll the Uramaki
15 Mins
Room temperature, about 20°C (68°F)
Place a nori sheet shiny-side down on the mat. With wet hands, spread a quarter of the rice in a thin, even layer, leaving a 1 cm bare strip at the far edge. Sprinkle with sesame seeds, then flip the sheet so the rice faces down. Lay a line of spicy tuna, cucumber and avocado across the middle, then roll the mat forward firmly, pressing gently to shape a tight cylinder. Repeat for the other three rolls.
Press with your fingertips, not your palms — firm, even pressure keeps the roll tight without squeezing the filling out.
Done when: Each roll is a firm, even cylinder that holds its shape when lifted.
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5
Slice Each Roll into 8 Pieces
5 Mins
Room temperature, about 20°C (68°F)
Wet a long, sharp knife and wipe it clean between cuts. Cut each roll in half, then cut each half in half again, then halve once more, so you get 8 even pieces. Wipe and re-wet the blade after every cut so the rice does not drag.
One long pull of the blade, no sawing — a sawing motion squashes the roll flat.
Done when: Clean, square cuts with the pink tuna, green cucumber and pale avocado visible in every piece.
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6
Plate with Ginger and Wasabi
5 Mins
Serve chilled, below 4°C (40°F)
Arrange the pieces cut-side up on a plate so the filling shows. Tuck the pickled ginger and a small mound of wasabi at the side, and pour a little soy sauce into a small dish for dipping. Serve at once.
Serve the rolls the moment they are cut — sushi rice firms up as it cools and the nori goes soft within the hour.
Done when: The plate is neat, the rolls are cool, and the ginger and wasabi sit beside them, not on top.
auto_awesome Finishing Touches & Plating
Set the rolls out cut-side up so the pink tuna shows, scatter the sesame seeds over the top, and serve at once with pickled ginger, wasabi and soy sauce on the side — sushi rice firms up as it cools, so do not leave the rolls standing.