Broccoli, chicken & cashew nut stir fry

INGREDIENTS

• 1 tbsp soy sauce
• 2 tsp seasoned rice vinegar or white wine vinegar
• 1 juice of 1 small orange
• 1 tsp dark muscovado sugar
• 2 tsp cornflour
• 2 tbsp stir-fry oil or vegetable oil
• 85g 3 oz unsalted cashews nuts
• 1 medium onion , thinly sliced
• 1 large skinless boneless chicken breast fillet , cut into chunks
• 250g broccoli florets
• 150g pack mangetout , sliced in half
• 1 red pepper , seeded and thinly sliced