Scallop-Crab Motoyaki: Diver Sea Scallop, Crab, and Ponzu Aïoli
For the Ponzu Sauce:
Juice 1 orange and half of a grapefruit, lemon, and lime. Combine the citrus juices and set aside. Whisk the soy sauce, mirin, rice wine vinegar, and sugar together with the reserved juices and the yuzu juice. Slice the remaining fruit, add it to the soy sauce mixture, and marinate 8 hours (or overnight) in the refrigerator. The next day, strain the Ponzu Sauce through a fine-meshed strainer and reserve. Set some aside for plating.
For the Ponzu Aïoli:
Combine the egg yolks, mustard, and ¼ cup of Ponzu Sauce in a food processor with garlic, salt, sugar and togarashi. With the processor on, add half of the oil slowly. Add half the Pecorino Romano and ¾ cup of Ponzu Sauce. Slowly emulsify the remaining half of the oil. Add the remaining half of the Pecorino Romano and mix until smooth and thick.
For the Scallop-Crab Motoyaki:
Preheat a convection oven on high fan speed to 425ºF. Season the scallops lightly with salt. Heat a large sauté pan until extremely hot, and add the oil. Lightly sear the scallops for no more than 20 seconds. Cool immediately. Combine more salt in a bowl with a few drops of water to form a stiff sand-textured salt mixture. Put the scallop shells on a sheet pan, with each shell on a small mound of salt mixture so the shells stay upright. Distribute the scallops and crab meat evenly between the shells. Separate the lump crab pieces very slightly. Using a squeeze bottle, squeeze about ⅛ ounce of Ponzu Sauce over the scallops and crab evenly in each shell. Squeeze about 1 ounce of Ponzu Aïoli on the scallops and spread evenly with a small offset spatula, being sure to completely cover the scallops and crab. Add a touch more if necessary. Torch the Aïoli until golden brown, and put the scallops into the oven. Bake for 7 minutes. Using small tongs, drain any excess oil or liquid from each shell by tilting slightly. Be careful not to tip too far as to distort the contents of the shell.
To Assemble and Serve:
While the scallops are still on the sheet pan, garnish the shells with a sprinkle of peppers and chives. Present on a plate on a small mound of wet salt and serve within 5 minutes. Small spoons are recommended.