BBC Food - Recipes - Avocado 'cannelloni' with crab, scallops and sea herbs

Ingredients

• 200g/7oz cherry tomatoes , halved
• 2 sprigs fresh thyme , leaves picked
• salt
• pepper
• 1 ripe unbruised avocado
• ½ lime , juice only
• 1 cooked cock crab , white and brown meat separated
• 1 tbsp chopped fresh coriander
• 1 tbsp mayonnaise
• sea salt and white pepper
• 2 pink grapefruit , juice only
• 1 tbsp sugar syrup
• 1 tsp of xanthan gum
• pinch smoked paprika
• 1 tbsp cream
• 2 tbsp olive oil
• 2 large diver-caught king scallops , shell and corals removed
• selection of sea aster, sea kale & purslane, blanched and kept warm
• 1 tbsp coriander cress