Preheat the vegetable oil to 150°C.
Rinse the shrimps with filtered water. Drain the excess water through a colander and let it drip dry.
In a bowl, mix together all the ingredients in Mixture A into a batter.
In another bowl, mix the dusting flour together and start dusting the shrimps. It is important to tap out the excess flour in order to achieve a thin and crisp coating.
Dip the shrimps into the batter and then quickly drop them into the preheated hot oil.
Fry until golden brown, remove them from oil and leave them on a kitchen towel to absorb the excess oil.
As a serving suggestion, serve this with some Japanese mayonnaise and lemon wedges.