Mix yoghurt, salt, pepper and mint together in a small serving bowl and set aside in the fridge.
Have three large plates or shallow bowls ready for breading the fish: one with egg, one with flour and spice mix and one with panko crumbs.
Coat fish pieces first in egg, then spiced flour and finally panko before.
Also prepare a large plate covered with a few layers of kitchen towel.
Heat oil in deep fryer (or in large saucepan) and have a deep-frying skimmer (or slotted spoon) on hand to assist in getting the cooked fish out.
Carefully lower fish pieces away from your body, into the hot oil.
Do not over crowd the oil with too many pieces of fish, 5 pieces at a time should be sufficient (depending on the size of your deep fryer or saucepan).
Fry for 3-5 minutes until golden brown before removing and placing on kitchen towel to remove excess oil.
