​Authentic Tom Yum Soup

 

​A classic Thai masterpiece balancing spicy, sour, salty, and sweet flavors.
​Prep time: 15 minutes
Cook time: 15 minutes
Servings: 4

​Ingredients

​The Aromatics (The Base)
​4 cups Chicken or vegetable broth (high quality)
​1 stalk Lemongrass (pale part only, bruised and cut into 3-inch segments)
​3-4 Kaffir lime leaves (torn by hand to release fragrance)
​1-inch piece Galangal (thinly sliced; substitute with ginger if necessary)
​3-4 Thai bird’s eye chilies (smashed; adjust to your heat preference)
​The Main Components
​200g (7 oz) Shrimp (peeled and deveined; or substitute with chicken or tofu)
​1 cup Mushrooms (oyster, shiitake, or straw mushrooms are preferred)
​2 medium Tomatoes (quartered)
​The Seasoning & Garnish
​3 tbsp Fish sauce (or soy sauce for a vegetarian version)
​1 tbsp Granulated sugar
​3-4 tbsp Fresh lime juice (must be freshly squeezed)
​1-2 tbsp Thai roasted chili paste (optional, for a richer color and depth)
​Fresh cilantro (for garnish)
​Thai chili oil (optional, for drizzling)

​Professional Instructions

​Infuse the Aromatics:
Bring the broth to a boil in a large pot over medium-high heat. Add the lemongrass, kaffir lime leaves, galangal, and smashed chilies. Allow the mixture to simmer for 5–7 minutes to fully extract the essential oils and flavors.
​Cook the Vegetables:
Stir in the mushrooms and tomatoes. Continue to simmer for about 2–3 minutes until the vegetables begin to soften.
​Poach the Protein:
Add the shrimp (or your choice of protein) to the pot. Cook for 2–3 minutes—just until the shrimp turn pink and opaque. Avoid overcooking to maintain a tender texture.
​Season the Broth:
Stir in the fish sauce, sugar, and chili paste (if using). Taste the broth and adjust the saltiness or sweetness to your liking.
​The Acidic Finish:
Important: Remove the pot from the heat before adding the lime juice. Boiling lime juice can result in a bitter taste; adding it at the end preserves its bright, citrusy profile.
​Plating and Presentation:
Ladle the soup into individual bowls. Garnish with a generous handful of fresh cilantro and a drizzle of Thai chili oil for a professional, vibrant finish.
​Chef’s Notes
​Aromatic Notice: While lemongrass, galangal, and lime leaves are essential for the flavor, they are traditionally left in the bowl but not eaten.
​Balance: If the soup is too sour, add a pinch more sugar. If it’s too spicy, add a splash more broth or coconut milk for a "creamy" version.