Method
- Bring stock to a simmer. Whisk in tamarind paste; the broth turns cloudy amber.
- Add prahok diluted with a splash of stock. Simmer 5 minutes — the funky-fermented note will mellow.
- Add pineapple, tomato and taro stem; simmer 10 minutes. The pineapple sweetness and tomato acid develop.
- Add fish sauce and palm sugar. Taste — should land sour first, then salty, then a slow chili build with the funky prahok underneath.
- Slip in the fish pieces; cook 4 minutes — pull off the heat the moment the flesh turns opaque.
- Add okra, water spinach and chilies. Off the heat, throw in the rice paddy herb and sawtooth coriander. Drizzle the garlic-and-oil over the top. Serve with rice; samlor machu is rarely eaten alone, always alongside rice and other dishes at a Cambodian meal.
Common questions
Can Samlor Machu Trey be made ahead?
Samlor Machu Trey is best made and eaten the same day, but the components can be prepped earlier — chop and measure the ingredients up to a day ahead, refrigerated separately. Final cooking takes about 25 minutes.
Is Samlor Machu Trey spicy?
Samlor Machu Trey as written is mild to mildly warming — the heat comes from aromatics rather than chili. Add fresh sliced chili or chili oil at the end if you'd like to push it spicier.
Is Samlor Machu Trey vegetarian or gluten-free?
This recipe is suitable for most diets. If you have specific restrictions, the substitutions section in each ingredient note covers the most common swaps.
How hard is Samlor Machu Trey to make at home?
Samlor Machu Trey is approachable for a home cook with basic stove skills — total time about 45 minutes, no special technique required.
Can Samlor Machu Trey be scaled up or down?
This recipe is written for 4 servings. To scale, multiply each ingredient proportionally; the cooking times stay the same up to about double the volume. Beyond that, expect to cook in batches because of pan size and heat distribution.
Cultural Note
Samlor machu — 'sour soup' — is a Khmer family meal staple, found in dozens of regional variations. Samlor machu trey (fish), samlor machu sach ko (beef), and samlor machu kreung (with kreung paste) are the most common. The prahok is the irreplaceable umami; without it, the soup becomes generic. Rice paddy herb (chi nha cha) is the Khmer marker, distinguishing this from Vietnamese canh chua or Thai tom yum. The dish is comfort food, paired with rice and other curries on the same lunch table.
