Fish stock takes much less time to make
than other stocks, and your fishmonger will often give you fish trimmings.
Do not allow the stock to simmer for too long as overcooked bones can give
it a rather gluey texture.
Makes 1.5 liters
White fish trimmings, plus any available shrimp heads and shells
Lemon grass, halved and crushed
Put all the ingredients into a large
saucepan and bring to the boil, skimming.
Reduce the heat and simmer, covered, for