Ingredients :
Green king prawns : 500g
Egg, lightly beaten : 1 egg
Cornflour : 2 tbsp
Thick slices of bread : 8 pcs
Boiled egg yolk : 1 hard 
Ham : 1 slice
Spring onion : 1 chopped
Oil for deep-frying :
Method :
* Shell and devein prawns, leaving tails intact. Gently flatten prawns.
* Combine egg and cornflour in small bowl, add prawns. Mix well; coat prawns completely.
* Remove crusts from bread, cut slices in half.
* Place 1 prawn, cut-side-down on each piece of bread, gently flatten prawns on bread with palm of hand.
* Brush with left-over cornflour mixture.
* Chop egg yolk and ham into 1cm cubes. Push a cube of egg yolk onto prawns bear tail.
* Place a cube of ham in centre of each prawn.
* Place ¼ tsp finely chopped shallot at the bottom of each prawn; there should be egg, 
      ham, and shallot along the centre of each prawn.
* Gently ease toasts, 2 or 3 at a time, into hot oil, deep-fry until bread is golden and 
    prawns are cooked through; drain on absorbent paper.