• prawns, unshelled 6 nos
• For Marinade:
• Rice Vinegar – 3 tbsps
• Sugar – 1 tsp
• ajinomoto a pinch
• water – 4 tbsps
• salt – 1.5 tsp
• For the Filling:
• Egg yolks 4 nos
• Sugar – 1.5 tsp
• Lemon juice – 2.5 tsp
• salt to taste


  1. Keeping the shell intact pass a tooth pick through the flesh of the prawn so that it doesn’t curl.
  2. Boil these prawns in water for about 3-4 minutes or till they change colour.
  3. Drain the water and immediately pass the prawns through cold water.
  4. Now remove the toothpicks and peel the shell off from the prawns, but leave the tail section of the shell.
  5. Cut the prawn slightly and remove the vein from its back.
  6. Make a deeper incision on the prawn and spread the prawn making it look like a butterfly.
  7. To prepare the marinade, mix the vinegar with water, salt, sugar, ajinomoto and mix it with the prawns, then marinate for 1 hour.
  8. Beat the egg yolks lightly and remove about 2.5 tsps. of the egg yolks and keep aside.
  9. Add water to the remaining yolks, mix well and cook over a medium flame till the yolks turn firm.
  10. Drain the yolks and then mash them to a fine paste.
  11. Mix the sugar, salt, lemon juice, ajinomoto and the rest of the egg yolk and beat well.
  12. Pass this mixture through a fine sieve, then mix it with the mashed egg yolk and keep aside.
  13. Divide the filling into 6 portions and then fill them into the 6 individual prawns.
  14. Seal the edges by pressing them together and serve.