Portuguese Arroz de Marisco (Seafood Rice)

Ingredients

• 500 g large prawns (shell-on)
• 300 g mussels (cleaned)
• 300 g clams (soaked to remove grit)
• 200 g calamari (cleaned and cut into rings)
• Heads and shells from the prawns
• 1 onion (quartered)
• 1 carrot (chopped)
• 2 garlic cloves (smashed)
• 2 bay leaves
• 1 1/2 litres water
• 300 g Carolino rice (or Arborio as substitute)
• 1 large onion (finely chopped)
• 3 garlic cloves (minced)
• 2 ripe tomatoes (peeled and chopped)
• 2 tbsp tomato paste
• 100 ml dry white wine
• 60 ml olive oil
• 1 tsp sweet paprika
• 1 fresh red chilli (optional, sliced)
• Salt
• freshly ground black pepper
• 1 handful fresh coriander (roughly chopped)
• Lemon wedges (to serve)