1. Put the shrimp, onions, cilantro, ginger and salt in a food processor and finely chop all the ingredients. Do not puree.
2. In a bowl, mash the potato and add this mixture with garam masala powder, coriander powder and lemon juice. Mix well.
3. In a bowl add besan, pepper powder, a pinch of salt and mix all the ingredients together. Now by pouring little water at a time make a smooth batter (neither too thick nor too lose).
4. Spread equal amounts of the shrimp mixture onto 8 slices of the bread. Top with the remaining slices of the bread. Press together gently but firmly.
5. Heat oil in a large skillet.
6. Dip bread pieces in the batter and fry till crisp on medium flame.
7. Serve hot with tomato ketchup.

Recipe & image: Only Fish Recipes