Method

1. Heat large heavy frying pan over medium-high heat. Add chicken and cook, stirring occasionally and breaking up meat with wooden spoon, for 4 mins, or until just cooked through. Transfer chicken to bowl.
2. Return pan to heat, add onion and garlic and cook, stirring occasionally, for 1 min, or until onions begin to soften. Stir in celery and cook, stirring often, for 3 mins, or until vegetables are slightly tender.
3. Stir in hoisin sauce. Return chicken to pan and cook 30 seconds to blend flavours. Stir in cabbage, carrots and half of spring onions and season with salt and pepper. Remove pan from heat.
4. Arrange lettuce leaves on four plates. Spoon chicken mixture into each leaf and garnish with remaining spring onions and coriander.