1. buy fresh market prawns then bring them home
2. wash them once
3. put them into a strainer then leave them until the dripping stops
4. place the shrimps inside a plastic bag
5. place the bag inside the freezer making sure it lies at the freezer floor and leave it there for 2-3 hours
6. bring the bag of shrimps out of the freezer then hit it gently against a hard surface like the floor. this will free them from being stuck to each other
7. immediately, place the frozen shrimps into another container then put it back into the freezer
at the time of feeding, just bring out of the freezer just enough for your needs, thaw them, cut off the tail and the spine, cut them into bitesize pieces then feed them to your fave fish