In a separate bowl, whisk the sugar, yolks and cornflour until fluffy, then whisk in the milk.

Combine the eggs, milk and melted butter in a separate bowl and pour half the mixture over the flour.

In a separate bowl, gently whisk together the remaining olive oil and the lemon juice and season with the salt and pepper.

In a separate bowl, whisk the fish or soy sauce, curry paste, garlic, ginger, eggs and oil.

Mix the flour and baking powder in a separate bowl, then gently fold into the wet ingredients.