Bring 1/3 of the coconut milk to the boil, season with lemongrass, shallots, lime leaves, fish sauce, palm sugar, lime juice, tamarind stock and some chilli (the rest for the garnish). Then add the rest of the coconut milk and the scallops, simmer gently until the mussels are cooked through.
Garnish the finished soup with plucked coriander and a few chili rolls and serve hot.
If you like, you can also serve Asian fragrant rice.
Annotation:
The scallops can also be exchanged for any firm fish fillet (cut into bite-sized pieces) or prawns!