Recipe for Teriyaki Burgers
1 onion, finely chopped
200g minced pork
300g minced beef
25 g breadcrumbs
75 ml milk
Salt and pepper
4 tbsp mirin
4 tbsp soy sauce
4 tsp sugar
Sauté the onion in butter for five minutes until softened. Add to the pork and beef (remembering to cool it first unless you’re cooking right away) and mix.
Add the milk to the breadcrumbs and allow it to absorb the liquid. Then, add this along with the egg and seasonings to the onion and meat mixture, and mix well.
Form the mixture into bento sized hamburgers. You should be able to get 23 small hamburgers from this – you can vary the size depending on how many you want to fit in the bento.
Chill in the fridge for an hour to set, then remove and fry gently in oil until they are cooked through.
Meanwhile, in a separate pan, heat the mirin, then add the soy sauce and sugar. Simmer until thickened, then pour over the burgers.
Allow the sauce to coat the burgers, and cool. The sauce should glaze the meat as it gets cold.
This will make enough burgers for two people for dinner and two lunches the next day.