Serve this green butter with dried slices of cold toast and pieces of smoked fish for a light lunch or for an evening meal starter. This butter is also good with something roasted or grilled, such as salmon or lamb.
Apologies, but you really need fresh parsley for this: dried won't cut it. 1 oz / 30g anchovy fillets = 6 to 7 drained fillets from a tin. Instead of sorrel, you can use rocket (arugula) or watercress -- if you do, blanch them with the parsley.