Thai Chicken Vegetable Stir-Fry is such a simple recipe to make & one that is so flavorful. The key ingredient in this stir-fry has to be the Thai basil. Use the basil leaves much like you would spinach: either leave them whole or a quick tear. I tend to leave them whole. Thai basil, a native to Southeast Asia, has a distinctive flavor some describe as aniseed but more complexity. You can find Thai basil in some grocery stores, fruit & veg markets, farmers markets or, most commonly, in Asian food markets. I do state in the recipe regular, sweet basil – the common herb you find in most stores, can be substituted but only in a an emergency. The reason this recipe it so fragrant & flavorful is the Thai basil. So please, do yourself a favor & locate an Asian or international grocery store. In the warmer weather, it is very easy to grow from seeds or buy a seedling. I have found it more hardy than regular basil. Thai basil is has a distinctive has a purple to green stem a thin leaf & small purple flowers.