Combine prawns, tofu, egg and (A) in a mixing bowl. Mix until well blended. Stir in seasoning.
Heat oil in a wok over a medium heat and fry heaped teaspoonfuls of the mixture until golden brown.
Drain the fritters on absorbent kitchen paper towels and serve with wasabe mayo chilli sauce immediately. To make the dipping sauce, mix all the ingredients together and chill well in the refrigerator before use.