1 leek, white part only, trimmedÌý
2 small rosemary sprigs
1 banana shallot, choppedÌý
few sprigs fresh thymeÌý
6 strands wild garlicÌý
1 bay leafÌý
salt and freshly ground black pepper
dash olive oil
3 tbsp olive oilÌý
splash sherry vinegarÌý
100ml/3½fl oz Amontillado sherry
30g/1oz butterÌý
250g/6oz cockles in shellÌý
6 lamb cutletsÌý