Singapore Chilli Crab

Bahan-bahan (3 porsi)

• 1.5 kg / 3lb live mud crab or other large, fresh crab
• 5 red cayenne chilli (, seeds left in, roughly chopped (Note 2))
• 2 tbsp taucu paste ((fermeted soy paste, sub miso Note 3))
• 6 g arlic cloves ((small), roughly chopped)
• 2 eschalots ((small), roughly chopped (Note 4))
• 3 tbsp ginger (, roughly chopped (~7.5cm / 3" piece))
• 1/4 cup canola oil
• 1 tbsp belachan dried shrimp paste (, chopped (sub shrimp paste, Note 5))
• 1 cup tomato passata ((Note 6))
• 1/2 cup sweet chilli sauce
• 2 tbsp ketchup
• 2 cups water
• 1 egg (, lightly whisked)
• 3 tbsp white vinegar
• Fresh coriander (, leaves whole or roughly chopped)
• 2 tbsp green onion (, finely sliced (or 1/4 cup finely sliced on angle, ice water 3 minutes for slight curl))
• Golden mantou buns ((Note 7))