Numbing, fiery and dangerously addictive — mala xiang guo is Singapore's favourite pick-your-own-ingredients stir-fry, and the best stalls are worth crossing the island for. Our 5 picks: Ri Ri Hong's People's Park legend with its famous $1/$2/$3 pricing, Ming Sheng's balanced not-too-oily wok at Whampoa, Wang Xing's Far East Plaza OG with a 30-chilli house sauce, Tang²'s modern build-your-bowl malatang (some outlets till 4:30am) and more — plus how to order like a pro (xiao la is not a dare).