This is an easy one. Place the shrimp in a colander and run lukewarm water over it. Then place the colander or strainer in a bowl and fill with lukewarm water. Leave it for 10 minutes, then drain water that will be chilled from the defrosting shrimp. Fill the water up again and leave for another 5-10 minutes. Your shrimp should be defrosted at this point, of not repeat until it does.