Crunchy salt and pepper prawns with sweet chilli syrup

Ingredients

• Sweet chilli syrup
• 1/2 cup white sugar
• 1/2 cup (125ml) water
• 1/4 cup sweet chilli sauce
• 4 kaffir lime leaves, torn
• 1 small piece fresh ginger, chopped finely
• 2 fresh coriander roots and stems, washed, sliced thinly
• 30 (800g) uncooked medium prawns, shelled and deveined, tails intact
• 3/4 cup japanese breadcrumbs (panko)
• 1 teaspoon cracked black peppercorns
• 1 1/2 teaspoon piri piri seasoning
• 2 teaspoons sea salt flakes
• 1 egg white, beaten lightly
• vegetable oil, for deep-frying
• 1 fresh long red chilli, sliced thinly
• 2 tablespoons fresh coriander leaves, chopped, to garnish