1 spring onion, trimmed and finely sliced
½ tsp dried chilli flakes
2 tbsp tomato ketchup
25g/1oz plain flour
½ tsp ground black pepper
1 tbsp soft light brown sugar
25g/1oz cornflour
½ tsp Chinese five-spice powder (optional)
3 tbsp maple syrup
½ fine sea salt
½ heaped tsp sesame seeds
50g/1¾oz sunflower oil
1½ tbsp cider vinegar or white wine vinegar
280g/10oz block extra firm tofu, drained and cut into 1.5 cm/â…in sticks