Vietnamese Hot-and-Sour Soup of Duck and Bamboo Shoots

Hot and sour make up the favourite combination for all savoury cooking in Southeast Asia. This is certainly so in soups – everyone knows the Thai tom yam. There are hot-and-sour soups in China, in Myanmar (though they don’ t like it too hot there), in the Philippines and Indonesia. They don’t always use the word ‘soup’, however. What follows, for example, is a one-bowl meal to feed an entire family from a single duck. In the original, the whole duck was chopped up and boiled, bones and all,