Turkey and lemongrass summer rolls

Ingredients

• 2 teaspoon oil
• 500 gram turkey mince
• 2 stalks lemongrass, trimmed, chopped
• 2 green onions, finely chopped
• 1/4 cup fresh mint leaves, finely chopped
• 2 tablespoon sweet chilli sauce, plus extra to serve
• 1 tablespoon fish sauce
• 1 lime, zest finely grated, juiced
• 1 clove garlic, small, crushed
• 18 round rice paper sheets
• 3 cup shredded iceberg lettuce