1.
Blend the chili and turmeric in a blender.
2.
Put water, blended ingredients, lemongrass, coconut milk, turmeric leaf and tamarind skin into the pot. Bring to a simmer.
3.
Then, add prawns, long beans, tomatoes and salt to the pot.
4.
Bring to a boil and then remove and serve.
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Tip
If fresh prawns are unavailable, frozen prawns can be used.
Cost-saving tips