Lemongrass Soup with Rhubarb and Radishes
Beyond Tom Yum: Discover the Unexpected Delight of Thai Soup with Rhubarb and Radishes
Thai cuisine is renowned for its vibrant flavors, aromatic herbs, and perfect balance of sweet, sour, salty, and spicy. While Tom Yum and Tom Kha often steal the spotlight, there’s a whole world of Thai soups waiting to be explored. Today, we’re venturing off the beaten path with a recipe that’s both comforting and surprisingly refreshing: Thai Soup with Rhubarb and Radishes.
This isn’t your typical Thai soup. The addition of rhubarb and radishes might seem unusual, but trust us – it works. The rhubarb lends a beautiful tartness that brightens the broth, while the radishes offer a peppery crunch and subtle sweetness. Combined with classic Thai flavors like lemongrass, kaffir lime, and fish sauce, this soup is a delightful explosion of taste and texture.
What Makes This Soup Special?
This soup is more than just a delicious meal; it’s a celebration of seasonal ingredients and creative cooking. Here’s what sets it apart:
- Unique Flavor Profile: The combination of rhubarb and radishes creates a unique tart and peppery flavor that you won’t find in traditional Thai soups.
- Nutrient-Rich: Packed with vegetables and lean protein, this soup is a healthy and satisfying meal.
- Easy to Make: With a relatively short cook time, this soup is perfect for a weeknight dinner.
- Versatile: Feel free to adjust the level of spice to your liking. Add more chilies for a fiery kick, or omit them altogether for a milder flavor.
Tips for Success
- Fresh is Best: Use fresh lemongrass, kaffir lime leaves, and chilies whenever possible for the most authentic flavor.
- Adjust the Seasoning: Taste the soup throughout the cooking process and adjust the fish sauce, brown sugar, and chili levels to your liking.
- Don’t Overcook the Radishes: Radishes should retain some of their crunch, so add them towards the end of the cooking time.
- Garnish Generously: A sprinkle of fresh cilantro adds a vibrant pop of color and flavor.
Beyond the Recipe: Exploring Thai Soup Variations
Thai soups are incredibly diverse. Here are a few other variations you might enjoy:
- Tom Yum Goong: The classic hot and sour shrimp soup.
- Tom Kha Gai: Coconut milk-based soup with chicken and galangal.
- Khao Soi: A creamy coconut curry noodle soup from Northern Thailand.
Frequently Asked Questions
Q: Can I use frozen rhubarb?
A: Yes, you can use frozen rhubarb, but it may release more liquid during cooking. Reduce the amount of chicken stock slightly if needed.
Q: What can I substitute for kaffir lime leaves?
A: While kaffir lime leaves are ideal, you can substitute with the zest of one lime and a teaspoon of lime juice.
Q: Can I make this soup vegetarian or vegan?
A: Yes! Substitute the chicken stock with vegetable stock and omit the fish sauce. Use soy sauce or tamari instead.
Q: How long does this soup keep?
A: This soup can be stored in the refrigerator for up to 3 days. The flavors will actually improve over time!
Q: What kind of chicken should I use?
A: You can use either chicken breast or thigh. Thigh meat will result in a richer, more flavorful soup.

Thai Soup with Rhubarb and Radishes
Ingredients
- 1 quart chicken stock homemade or low-sodium commercially prepared
- 3/4 pound skinless and boneless chicken meat breast or thigh
- 8 ounces white mushrooms
- 2 stalks rhubarb about 1 1/2 cups chopped
- 1 cup radishes 8-10 small or 6 medium
- 3 stalks lemongrass
- 5 kaffir lime leaves fresh or frozen
- 3 Thai chilies or 1 teaspoon dried chili flakes
- 2 inch ginger
- 2 tablespoons brown sugar
- 1/4 cup fish sauce plus more to taste
- 1/2 cup cilantro chopped, for garnish
Instructions
- Combine chicken stock, chicken, mushrooms, rhubarb, radishes, lemongrass, lime leaves, chilies, and ginger in a large pot.
- Bring to a boil, then reduce heat and simmer for 10 minutes.
- Stir in brown sugar and fish sauce.
- Taste and adjust seasoning as needed.
- Garnish with cilantro before serving.
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