1. King’s salad.
When we think of cosmos, we think of the pretty delicate flowers once so common in the gardens of our grandparents. Not so in Malaysia and some other Southeast Asian countries. They think of food. Cosmos caudatus, known there as ulam raja, or King’s salad, is a two-metre tall plant with soft, pungent leaves that form a popular vegetable eaten both raw and cooked. They taste like mango. At night, the leaves fold up as the plant goes to sleep.