For prawn topping, place all ingredients except crab in a food processor and pulse to a coarse paste. Transfer to a bowl, season to taste and stir through crab meat. Refrigerate for at least 30 minutes to firm up.
2
Remove ends from sourdough and cut loaf into 1cm-thick slices. Top each slice with a thick layer (1cm) of topping and sprinkle with sesame seeds.
3
Heat oil in a deep-fryer or deep saucepan to 180ËšC. Fry each piece of prawn and crab toast separately until golden and topping is cooked (3-5 minutes). Drain on paper towels and cut in half.
4
For green papaya and herb salad, place ingredients in a large bowl, season to taste and toss to combine.
5
To serve, scatter with green papaya and herb salad with sriracha mayonnaise on the side.
Uncooked crab meat can be bought frozen from specialty grocers and fishmongers.
After assembling prawn and crab toast, refrigerate for 15-30 minutes. Chilling helps the prawn mixture set, making it easier to handle and prevents the filling falling apart while frying.