Pork

Heat the vegetable oil and fry the onion until golden brown
Add the pork to the center of the pan
Mix the vegetable stock, soy sauce, mirin and sugar, pour three-quarters of the mixture around the pork and sizzle until the sauce thickens and the pork reheats
Pour the beaten eggs around the pork and cook 2–3 minutes until set but slightly runny
Divide the sushi rice between two bowls
Top each bowl with half the egg and pork mixture
Sprinkle the chives over the bowls
Drizzle additional soy sauce over the bowls if desired