Shanghai is an international city featuring cuisine from all over the world. Adventurous eaters may want to go for a culinary challenge and try ladetiao, one of, if not the spiciest dish you can find in the city. It features bullfrog meat, slow-cooked for 40 minutes in five different types of chilli peppers. The dish is so daunting to eat – even for spice lovers – that one restaurant in Shanghai ran a promotion, offering ladetiao free of charge to anyone who could finish within an hour.