1 red chilli, finely sliced
2 tbsp roughly chopped fresh coriander
2 cloves garlic, crushed to a paste with the edge of a knife
2 spring onions, trimmed, finely sliced
300ml/10½fl oz chicken stock
1 x 400ml/14fl oz can unsweetened coconut milk
1 dessertspoon ready-made red curry paste
2°ì²µ/4½±ô²ú mussels, cleaned and de-bearded (discard any mussels that do not close tightly when tapped)