2.Weight tofu between two boards; stand, tilted, for 10 minutes to remove excess liquid. Cut tofu into 2cm cubes; pat dry between layers of absorbent paper. Place tofu on baking-paper-lined oven trays. Bake, uncovered, for 10 minutes or until browned lightly.
3.Meanwhile, cook rice according to packet directions until tender.
4.Heat oil in a wok over high heat; stir-fry onion, garlic and ginger for 3 minutes or until onion softens. Add blended cornflour and soy sauce to wok with tofu, peas, buk choy, sugar, oyster sauce and mirin; stir-fry until sauce boils and thickens slightly. Remove from heat, stir in coriander; serve with rice.
Buy the smallest baby buk choy you can find. You could also use gai lan or ta gho (available from Asian greengrocers). ‘Vegetarian oyster sauce’ is made from blended mushrooms and soy sauce. It is available from health-food stores and some supermarkets. Most supermarkets stock mirin. If you can’t find it use sweet white wine or sherry, instead.