Gyudon Rice Burger
Gyudon you can hold: sticky-sweet reduced beef and crisp lettuce between rice buns seared golden in sesame oil and glazed with soy.
Method
Mix the hot rice evenly with the potato starch and salt and divide it into 4 portions. Wrap each in cling film and press firmly with your palms into a disc 9 cm wide and 1.5 cm thick. Tighten the edges with your fingers so the buns don't crumble in the pan.
Add in this stepHot cooked short-grain rice 300 gPotato starch 1 tspSalt 1 pinch
Heat the sesame oil in a non-stick frying pan (26 cm) over medium heat and cook the rice buns in 1 batch(es). Leave each side undisturbed for 3–4 minutes until a golden, crunchy crust forms, then flip; in the last 30 seconds brush with soy sauce and give each side a moment more. in total.
Add in this stepToasted sesame oil (for searing) 2 tspSoy sauce (for brushing the buns) 2 tsp
medium heatWipe out the pan, add the sake, mirin, soy sauce and sugar, bring to a boil over medium heat, then add the onion and reduce for .
Add in this stepCooking sake 2 tspMirin 1½ tbspSoy sauce (for the beef) 1½ tbspSugar 2 tspOnion 80 g
medium heatAdd the beef and ginger, turn up to medium-high heat and cook for , stirring, until almost no liquid is left and the meat is coated in a glossy glaze. Reduce it well: leftover liquid will make the buns soggy.
Add in this stepThinly sliced beef short plate or brisket 160 gGrated fresh ginger 1 tsp
medium-high heatSpread a thin layer of mayonnaise on one bun, layer the lettuce, beef and red pickled ginger, sprinkle with shichimi and top with a second bun. Wrap the bottom half in parchment so your hands stay clean.
Add in this stepMayonnaise 2 tspRomaine lettuce leaves 2Red pickled ginger (beni shoga) 10 gShichimi togarashi to taste
Cook's tip
Shape the rice while it is hot, or it won't hold together; reheat cold rice in the microwave first. Pressing it into a ring mould or large jar lid lined with cling film gives even buns. Leftover gyudon, reduced until dry, makes a great filling.
Cooking it at camp
Shape the buns at home and carry them, still wrapped, in the cooler. On site, sear them on a grill grate or skillet for a smoky edge. Reduce the beef at home too, and you only need to reheat it.