Barbecue chicken with carrot-zucchini slaw

Method

• Step 1
  In a small heavy saucepan, heat 2 teaspoons of the oil over medium heat. Add the onion and cook, stirring often, for 4 mins, or until tender. Stir in the garlic and cook for 1 min or until garlic is tender.
• Step 2
  Stir in the vinegar, tomato sauce, water, sugar, Worcestershire sauce, mustard, salt, black pepper and cayenne. Bring to a simmer over high heat. Reduce heat to medium-low and simmer uncovered, stirring often, for 15 mins or until the sauce reduces and thickens slightly. Remove from heat. Reserve 1/4 cup sauce for basting. (See Note.)
• Step 3
  Heat the barbecue on medium-high. Coat chicken with remaining tablespoon oil and season with salt and pepper. Place chicken on the grill, close the hood for hooded barbecues, and cook chicken, basting occasionally with reserved 1/4 cup barbecue sauce, for 2-3 mins each side or until cooked through and slightly charred on the outside but still juicy.
• Step 4
  Meanwhile, in a small bowl, whisk the mayonnaise and vinegar to blend. Season.
• Step 5
  Using your hands, gently toss the zucchini, carrots, onion and coriander leaves and stems in a large bowl to combine. Toss the slaw with enough dressing to coat. Season to taste with salt and pepper.
• Step 6
  Transfer the chicken and slaw to plates. Serve with remaining barbecue sauce.