Grate the rind and squeeze the juice from 2 of the limes. Cut the remaining 2 limes into wedges
and set aside for later.
To prepare the prawns, remove the head and legs, leaving the shells and tails intact. Using a
sharp knife, make a shallow slit along the back of each prawn, then pull out the dark vein and
discard. Rinse the prawns under cold water and dry on kitchen paper.
Heat the olive oil in a large, heavy-based frying pan, then add the garlic and cook for 30
seconds. Add the prawns and cook for 5 minutes, stirring from time to time, or until they turn pink
and start to curl. Mix in the lime rind and juice and a splash of sherry to moisten, then stir well
Transfer the cooked prawns to a serving dish, season to taste with salt and pepper, and sprinkle
with the parsley. Serve piping hot, accompanied by the reserved lime wedges for squeezing over the