Thread one shrimp and one scallop onto small, sturdy skewers about 9cm (3½in) long - the shrimp should be pierced through the top and again near the tail, so they're curled into a "C" shape.
Prepare the grill for cooking over direct medium-high heat. Prepare a big bowl of ice for cooling the shrimp after cooking. Skewer the shrimp, three at a time, and double up the skewers to make a ...