Some highly reviewed powder chai mixes include David Rio Tiger Spice chai mix and Big Train Chamba chai spiced tea latte mix, as of 2015. You can also make your own with basic ingredients using a popular recipe on AllRecipes.com.
To make a chai tea mix, add 1 cup each of nonfat dry milk powder, powdered non-dairy creamer and French-vanilla-flavored powdered non-dairy creamer to a mixing bowl. Stir in 2 1/2 cups of white sugar and 1 1/2 cups of unsweetened instant tea. Mix in 2 teaspoons each of ground ginger and ground cinnamon and 1 teaspoon each of ground cloves and ground cardamom. Process the ingredients into a fine powder using a blender or food processor.