Finely dice the ginger, lemongrass, shallot and chilli. Thoroughly rinse and de-beard the cockles and mussels and discard any shells that are damaged or open.
Heat a large pan over a high heat, add the oil and sweat off the ginger, lemongrass and shallot for 1-2 mins.
Add the shellfish and stir, then after 30 seconds pour in the soy sauce and 50ml of your fish stock, cover with a lid and leave to cook for
mins.
Once the mussels and cockles have opened, add the rest of the fish stock and the red chilli and bring to a boil.
Finally, add the zest and juice of the lime, 2½ tbsp of the coriander and the sesame seeds and stir.
Spoon into a bowl, garnish with spring onions and the rest of the coriander and serve right away.
Recipe by appetite magazine at https://www.appetitemag.co.uk/soy-and-ginger-steamed-cockles-and-mussels/