Prawn Toasts with Black Vinegar and Chilli Dipping Sauce

Ingredients

• 500 gm medium uncooked prawns
• 3 spring onions, thinly sliced
• 2 garlic cloves, finely chopped
• 2 tbsp finely chopped coriander
• 1 tbsp finely chopped ginger
• 1 eggwhite
• 1 tsp each soy sauce, sesame oil and cornflour
• 12 thick slices of white bread
• To sprinkle: black and white sesame seeds
• For deep-frying: vegetable oil
• Black vinegar and chilli dipping sauce
• 80 ml Chinkiang vinegar (see note) (1/3 cup)
• 60 ml light soy sauce (¼ cup)
• 1 long red chilli, finely chopped
• 1 tbsp finely grated ginger
• 1 tbsp finely chopped coriander
• 2 tsp sesame oil
• 1 tsp caster sugar