Chilli crab was first sold from a pushcart on the Kallang river in the 1950s and is now the dish visitors queue for along Singapore's East Coast seafood strip. Big mud crabs are cut up, wok-fried and simmered in a thick, sweet, tangy and gently hot sauce of chilli, tomato and garlic, which is then silked with beaten egg. Everyone eats with their hands and mops up the sauce with fried or steamed mantou buns. It is a weekend or celebration meal, messy and loud. Buy crabs live or freshly cooked the same day from a fishmonger you trust. Discard any live crab that doesn't move, smells of ammonia or has a cracked, leaking shell. The common mistake is boiling the sauce after adding the egg, which scrambles it into lumps; pour it in a thin stream over a low heat. Chef's tip: ask the fishmonger to clean and quarter the crab for you, and crack each claw lightly with the back of a cleaver so the sauce soaks in.