Air Fryer Crispy Beef (Better than Takeout!)

FOR THE BEEF AND MARINADE

• 450 g (1 lb) sirloin steaks , remove large pieces of fat
• 1 tbsp cornflour (cornstarch)
• ¼ tsp bicarbonate of soda (baking soda)
• ½ tbsp soy sauce (light or all-purpose)
• 2 tsp sesame or vegetable oil
• 2 tsp Chinese cooking wine (optional)

FOR THE COATING

• 3 tbsp cornflour (cornstarch)
• 3 tbsp rice flour
• sesame or vegetable oil (in a spray bottle)

FOR THE SAUCE

• 1 tbsp sesame oil or vegetable oil
• 1 onion , sliced thinly
• 1 carrot , cut into thin strips
• 3 garlic cloves , minced
• 1 tsp minced ginger
• 3 tbsp dark soy sauce
• 2 tbsp rice vinegar
• 5 tbsp ketchup
• 2 tsp Sriracha , or more to taste
• 3 tbsp honey
• 2 tsp cornflour diluted in 2 tbsp cold water

TO SERVE

• 2 spring onions , finely sliced
• 2 tbsp sesame seeds
• 1 green chilli , sliced (optional)