Do some grocery shopping on your way out. The food markets that border the clothing warehouses stock hard-to-find produce like ropey, pale-green long beans, custardy cherimoya, electric-pink dragon fruit, and crunchy bitter melon. Bunches of aromatic lemon grass, sweet Thai basil, and leafy Vietnamese mint are easy to come by. Choose from fresh or frozen fish, including giant bags of frozen tiger prawns. Take home firm Asian tofu from a tub of water or, if you´re really brave, the delicacy balut; a partially fertilized duck egg. Rice flour and glutinous rice flour for baking appear at most shops. On my last trip to Sapa, I picked up sesame oil, shrimp-flavored rice paper, and fiery Sriracha hot chili sauce. The array of rice paper wrappers, noodles, sauces, and imported Vietnamese snacks and drinks is endless.