Prawn toast with quick sweet chilli sauce

Ingredients

• 3 garlic cloves, finely chopped
• 1 long red chilli, seeds in, finely chopped
• 4 tbsp red wine vinegar
• 3 tbsp soft light brown sugar
• 1 tbsp light soy sauce, plus extra to serve (optional)
• 1 tsp dark soy sauce
• 100g/3½oz raw peeled king prawns
• 1 large garlic clove, crushed
• 10g/?oz coriander, stalks finely chopped, leaves reserved to serve
• 3 spring onions, trimmed and finely chopped, 1 reserved to serve
• 1 tsp sesame oil
• 1 tsp cornflour
• 1 free-range egg white, lightly beaten
• pinch caster sugar
• 3 slices white country-style or farmhouse bread, crusts removed and cut in half diagonally
• 2 tbsp sesame seeds
• sea salt
• freshly ground black pepper
• 3–4 tbsp sunflower or vegetable oil, for frying