Sour Shrimp Soup

This is a tom yum-style shrimp soup built on the holy trinity of Thai aromatics: lemongrass, galangal, and kaffir lime leaves. These three ingredients infuse the chicken broth with a fragrant, citrusy heat that no amount of ginger and lime can replicate.

The broth gets boiled with the aromatics first for five minutes, just long enough to extract their essential oils without turning bitter. Shrimp and delicate enoki mushrooms go in last and barely cook, keeping them tender and silky instead of rubbery and tough.

Fish sauce, sugar, and lemon juice get stirred in at the end to hit that classic Thai balance of sour, salty, and sweet. Getting this ratio right is what makes tom yum addictive. Taste as you go and adjust until the sourness leads but the sweetness lingers.

Chef Tips

• Bruise the lemongrass stalks by smashing them with the flat of a knife. This breaks the fibers and releases far more flavor than just dropping them in whole.
• Galangal is not interchangeable with ginger. It has a sharper, more piney flavor. If using dried slices, soak them first to rehydrate.
• Don’t overcook the shrimp. They need only a minute or two in the boiling broth. Pink and curled means done. Any longer and they turn chewy.
• The aromatics (lemongrass, galangal, kaffir lime leaves) are for flavor, not eating. Leave them in the bowl for presentation but let guests know to eat around them.

Variations

• Add a splash of coconut milk for a creamier, tom kha-style version.
• Use firm tofu instead of shrimp for a vegetarian take, swapping vegetable broth for chicken.
• Stir in fresh Thai basil leaves right before serving for an extra layer of herbal fragrance.