5 coriander sprigs, leaves and stems separated, plus extra for serving
400ml can coconut milk Coconut milk ko-ko-nut mill-kCoconut milk is not the slightly opaque liquid that flows from a freshly opened coconut â€“â€¦
2 lemongrass, halved and bruised, plus a thumb-size piece ginger, thickly sliced (or galangal if you have it)
6 lime leaves, crushed Lime leaf ly-m leefLime leaves are obtained from the kaffir lime, which is not a true lime at all but rather aâ€¦
2 small green chillies, crushed
125ml coconut cream
500g mussels, scrubbed Mussels mus-selsOnce regarded as the poor relation of the shellfish family because of their small size andâ€¦
2 tbsp fish sauce Fish sauceA seasoning often used in Vietnamese and Thai cooking. In Vietnam it is usually made from shrimpâ€¦
2 tbsp fresh lime juice
Crush the coriander stems in a mortar using a pestle, then put into a large pan with the coconut milk, lemongrass and ginger. Bring to the boil and simmer for 4 mins. Add the lime leaves and chillies, then stir in the coconut cream.
Add the mussels and fish sauce, then cover with an ill-fitting lid or baking tray so that the mussels can steam, but the broth wonâ€™t boil over and make a mess of your stove. Bring the liquid back to the boil, then simmer for a few mins, shaking the pot every so often so the mussels move around and open up â€“ this should take about 3-5 mins.
When all the mussels are open, add the lime juice but donâ€™t boil again. Taste, and if you like it, good â€“ otherwise add more chilli for heat, more lime for sourness and more fish sauce if you think it needs salt. Spoon into bowls and sprinkle with the coriander leaves to serve.