In a food processor, blend the garlic, shallot, chipotle, lime juice, honey, tomatoes and coriander.
Thread the prawns onto a large skewer. Start at the tail and push the skewer through to the head so that you can easily cook the prawns on the barbecue.
Mix about two thirds of the salsa with the prawns and stir well until the prawns are well marinated. Leave to marinate for an hour. The rest of the salsa is delicious with the prawns after barbecuing.
Light the barbecue and cook the prawns until they are nicely red and charred.
To make the chipotle mayonnaise, mix the lime juice with the aioli and season with salt and pepper.