Combine miso, soy sauce, mirin and sugar in a bowl. Combine cornflour and water in a small bowl. Stir into the miso mixture and set aside until required.
Heat sesame oil in a large, deep frying pan over medium-high heat. Add pork and cook, breaking up lumps with a wooden spoon, for 5 minutes or until it changes colour. Reduce the heat to medium. Add shallot, ginger and garlic, and cook, stirring, for 1-2 minutes or until aromatic.
Add the miso mixture and extra water to the pan. Cook, stirring, for 5 minutes or until the sauce has slightly thickened and is glossy. Season with more sugar or soy sauce to your liking. Serve mince mixture over rice, topped with extra shallots, and with broccolini alongside.
I would serve in raw cabbage cups or baby cos cups
