Jamaican Shrimp and Pineapple Salad - Eatin' mess

Ingredients

• 20 large prawns, peeled and deveined
• 2 cups fresh pineapple chunks
• 1 avocado, cubed
• Half red onion, finely sliced
• 1 stick celery, finely sliced
• 1 head butter lettuce, full leaf cups
• 1 cup pineapple juice
• 1 tsp lime zest
• 3 tbs lime juice
• 1 tbs oil
• 2 cloves garlic, halved lengthways
• 1 sprig fresh thyme
• Large pinch cinnamon
• Large pinch allspice