Lemon grass chicken sliders with avocado salsa

Ingredients

• 1 tablespoon vegetable oil
• 1 stem lemon grass, white part only, finely chopped
• 3 cloves garlic, chopped finely
• 1 green onion (green shallot), finely sliced
• 1 small red chilli, seeded, finely chopped
• 2 teaspoons grated palm sugar or soft brown sugar
• 1 tablespoon fish sauce
• 4 kaffir lime leaves, chopped finely
• 400 grams chicken mince
• 1 medium (250 gram) avocado, flesh chopped
• 1 lebanese cucumber, diced
• 1 tablespoon finely chopped coriander leaves
• 1 tablespoon lime juice
• 2 tablespoons extra virgin olive oil
• 8 small hamburger buns, split in half
• 1 small butter lettuce
• tabasco sauce and mayonnaise, to serve