Char-grilled scallops with corn salsa

Ingredients

• 36 scallops (900g), roe removed
• 2 cloves garlic, crushed
• 2 tablespoons lime juice
• 1 tablespoon olive oil
• 2 corn cobs (800g), trimmed
• 200 grams grape tomatoes, halved
• 1 avocado (320g), chopped coarsely
• 1 red onion (170g), chopped finely
• 1 green capsicum (200g), chopped finely
• 2 fresh small red thai (serrano) chillies, chopped finely
• 1/4 cup coarsely chopped fresh coriander
• 8 x 15cm white corn tortillas
• lime wedges, to serve
• Lime dressing
• 1/4 cup (60ml) lime juice
• 1/2 teaspoon ground cumin
• 2 teaspoons olive oil