Follow the steps in order for the best result.
Begin by heating the oil in a large stock pot over medium heat. Introduce the minced lemongrass, ginger, garlic, and thinly sliced onion. Stir-fry these aromatics for approximately one minute, allowing their fragrances to bloom.
Incorporate the Thai red curry paste and Tom Kha soup mix paste into the pot. Continue to stir-fry for about 30 seconds, ensuring the pastes are well-distributed and fragrant.
Pour in the chicken stock, fish sauce, and sugar. Increase the heat and bring the mixture to a boil.
Once boiling, reduce the heat to low and allow the soup to simmer gently for around 15 minutes, enabling the flavors to meld together harmoniously.
Take the baby corn and slice each piece vertically into four strips. This will create visually appealing and easily manageable portions.
Add the sliced baby corn to the simmering pot and continue to cook for an additional 10 minutes, allowing the corn to become tender.
Introduce the coconut milk, sliced chicken, mushrooms, chopped tomato, lime juice, hot sauce, and red pepper flakes to the soup. Stir well to combine all the ingredients.
Allow the soup to simmer until the chicken is fully cooked and no longer pink, which should take approximately 5 to 10 minutes. Be careful not to overcook the chicken to maintain its tenderness.
Taste the soup and adjust the seasoning according to your preference. Add more sugar for sweetness, lime juice for tanginess, or hot sauce for spiciness. A little extra fish sauce can also deepen the savory notes.
I usually add one more TBS of sugar.
Serve your delectable Thai-inspired soup hot, garnished generously with fresh cilantro leaves. The vibrant green cilantro adds a refreshing finishing touch.
Note: If you have leftovers, the coconut milk may separate upon refrigeration. Simply reheat the soup and stir well to recombine the ingredients before serving.