Pork burger with avocado & grilled chilli mayonnaise

Method

• 1
  Preheat barbecue or char-grill pan to medium-high heat. Brush chilli and red onion with a little oil. Cook chilli on the grill for 5 mins, or until skin blisters. Cook the red onion for 2 mins on each side, or until charred. Place chilli in a small bowl and cover with plastic wrap then set aside until cool. Set onion aside on a plate.
• 2
  Line a tray with baking paper. In a medium bowl, mix pork mince and oyster sauce until well blended. Shape mixture into 4 burgers and place on prepared tray. Flatten each so that they are slightly wider than the rolls.
• 3
  Lightly brush rolls with oil and cook on grill plate for 2 mins on each side, or until warmed.
• 4
  Lightly brush burgers with oil. Cook burgers for 3-4 mins on each side until cooked through. Remove to a plate and rest for 3 mins.
• 5
  Peel chilli, remove seeds and stems then finely chop. Mix in a small bowl with mayonnaise, lemon juice and cayenne pepper, then season with salt and pepper.
• 6
  Mash avocado in their skins and spread over roll bases. Top each with lettuce, then burgers and onion. Spread lids with chilli mayonnaise and cover burgers. Place a skewer through the burger and serve.