Tom Kha Gai
ต้มข่าไก่·(tom kha gai)
Weeknight Kab Khao: The Thai Family Table
If Tom Yum is Thailand's fiery extrovert, Tom Kha is its comforting, soulful sister. For first-generation kids growing up in the American suburbs, the scent of sharp galangal and rich coconut milk wafting from the stove is the absolute definition of home. The secret to a grandmother-approved bowl lies in two strict, non-negotiable rules that restaurants often rush: a dual-acid approach utilizing simmering tamarind for deep, mellow sourness, and treating the coconut milk with the profound respect of a gentle simmer so it never breaks into a greasy slick. It is an unapologetically authentic bowl, built for a Tuesday night, that pulls no punches and tastes exactly like the homeland.
Before you start
Source the right coconut milk.
For the purest coconut flavor without chemical thickeners, look for high-quality UHT pasteurized coconut milk sold in paper cartons, like Aroy-D, at your local Asian market.
Assemble the aromatic packet ahead of time.
Smash the lemongrass, slice the galangal, tear the lime leaves, and smash the shallots over the weekend and keep them in the fridge to make this a true fifteen-minute weeknight meal.
Ingredients
- unsalted chicken stock2 cup
- full-fat coconut milk14 oz
- lemongrass stalks2 med
- fresh galangal1 med
- Makrut lime leaves6 med
- Thai shallots3 large
- coriander roots3 med
- boneless skinless chicken thighs1 lb
- oyster mushrooms5 oz
- Thai fish sauce3 tbsp
- tamarind concentrate2 tbsp
- palm sugar1 tbsp
- fresh Thai bird's eye chilies4 med
- dried red Thai chilies5 med
- fresh lime juice3 tbsp
- fresh cilantro1/2 cup
Method
- 01
Infuse the broth with the foundational aromatics.
In a medium soup pot or Dutch oven, combine the chicken stock, lemongrass, galangal, shallots, and coriander roots. Bring to a gentle boil over medium-high heat and simmer for 5 minutes to create a potent, fragrant tea.
- 02
Cook the chicken thighs halfway.
Add the bite-sized chicken thighs to the boiling broth and cook for 3 to 4 minutes. If any grey foam floats to the top, skim it off with a spoon to keep the soup clean.
- 03
Simmer the coconut milk gently without boiling.
Reduce the heat to medium-low and pour in the full-fat coconut milk. Stir gently, and from this point forward, do not let the soup come to a rolling boil, which would cause the coconut milk to separate into a greasy oil.
- 04
Build the savory and sour depth with tamarind.
Add the torn Makrut lime leaves, mushrooms, fresh smashed bird's eye chilies, fish sauce, palm sugar, and tamarind paste. Allow the soup to simmer gently for 3 to 5 minutes until the mushrooms are tender and the chicken is fully cooked through.
- 05
Finish with fresh lime juice entirely off the heat.
Turn off the heat completely and remove the pot from the stove. Stir in the fresh lime juice and the fried dried chilies; boiling lime juice destroys its bright aroma and turns the broth bitter.
- 06
Garnish and serve immediately.
Ladle the stark white soup into a large communal serving bowl, top generously with fresh cilantro, and serve alongside steaming hot jasmine rice.
Notes
Do not substitute ginger for galangal.
They are entirely different rhizomes, and using ginger will fundamentally alter the DNA of the dish. If fresh galangal is hard to find, buy it in bulk at an Asian market and freeze it.
Navigate missing ingredients.
If coriander roots are unavailable, substitute four or five thick bottom stems of fresh cilantro. If Thai shallots are missing, use a quartered small red onion.
Adjust the heat at the table.
The coconut milk naturally dampens the spice, but if cooking for kids, simply omit the fresh chilies during the simmer and serve them on the side in a small bowl of fish sauce.
Do not eat the aromatics.
The chunks of galangal, lemongrass, and lime leaves are left in the soup for aroma and authenticity. Simply push them aside in your bowl.
From Cook Thai in America.