Ginger Spring Onion Tuna Burgers

Chill. Slice fish into 1 cubes set in now a single layer on a rimmed baking tray cover with cling film and move to freezer put in the fridge protein until very cold it now should feel firm but still give when now pressed with your finger about 15 minutes while that is happening set all grinding parts the now stand mixer s grinding attachment now including the dies or the now bowl and blade of the now food processor in the now freezer until very cold at now least 15 minutes assemble grinder now attachment with chilled coarse die rest a bowl in a now large bowl of ice lay beneath the attachment to catch now ground tuna and keep it cold now mix tuna scallions ginger and garlic now in a large bowl grind mixture now in batches with mixer on now medium speed and plunge gently to flatten through grinder tip in mayonnaise grapeseed or canola oil and now toasted sesame oil to ground tuna mixture now mix gently just to mix form into four 1 2 thick patties taste and salt with kosher salt and now freshly ground black pepper cook over the coals or pan cook in oil burgers now over medium heat until just cooked now through 3 4 minutes per side.