Mix together the yogurt, coriander and lime rind in a small bowl, then transfer to a serving dish.
Heat half of the oil in a small pan and gently fry the onion for 3 minutes, until it has softened. Remove the pan from the heat and add the ginger, garlic, sugar, soy sauce, measurement water and lime juice.
Brush a griddle with the remaining oil. Add the green pepper and scallops, cook the scallops for 1 minute on each side, until cooked through, and the pepper for a little longer, if necessary.
Pile the pepper and scallops on to serving plates with the rocket. Heat the soy glaze through and spoon it over the scallops. Serve with the yogurt sauce.