Authentic Thai Recipe Ingredient: Mustard greens Mustard greens ผักกาดเขียว (Phak kat khiao; Pak gat keeow) In Thailand mustard greens are often eaten in soups and stir-fried dishes. Browse Ingredients by Category: VegetablesHerbs and Spices (Fresh)Herbs and Spices (Dry)Roots and RhizomesMeat and PoultryFish and SeafoodMushrooms and FungiFlowers and Tree LeavesFruits and NutsStaple FoodsChili Pastes and CurriesSauces and CondimentsInsects