Thai style larb moo

Ingredients

• 500g pork mince
• 3 tablespoons peanut or vegetable oil
• 6 red shallots or 2 small red onions, finely chopped
• 2 medium garlic cloves, finely sliced
• 2 small hot red chillies, finely chopped or 2 teaspoons (or to taste) dried chilli
• 1 stalk lemon grass (white part only), very finely chopped or grated
• ¼ cup fish sauce
• ¼ cup lime juice
• 2 tablespoons palm sugar, finely grated or 1 tablespoon caster sugar
• ½ cup packed coriander leaves
• ½ cup packed mint leaves, torn
• to serve
• ½ large iceburg lettuce, cut in 4 wedges
• 2 tablespoons crushed toasted unsalted peanuts (optional)
• extra mint leaves