Spice Paste for Thai Tom Yum Soup 1.75g x 3. Recreate Thailand most famous soup at home with this convenient Spice Paste that combines the refreshing flavor of lemongrass with fiery chili pepper. No added MSG, Preservatives or Artificial Color. Easy to prepare. Just add this paste in a chicken stock, add seafood or chicken, shitake or button mushroom, fresh coriander and chillies as garnish and optional seasoning like lime or lemon and soy sauce or fish sauce. Serve it hot to make it even perfect for cold weather .