Purchased raw, warm-water prawns are great for stir-frying, grilling and cooking on barbecues. To barbecue prawns, trim off the legs with scissors and make a slit along the back of the shell to de ...

Bring a large pan of water to the boil and add a squeeze of lemon and glug of vinegar. Add the whole prawns and cook until they rise to the surface. Drain and chill in ice-cold water. Peel the ...