陆 lemon, juice only
small bunch wild rocket
2 shallots, finely sliced
1 small banana shallot, peeled and finely sliced
bunch tarragon, stalks and leaves separated and leaves chopped
small bunch watercress
salt and freshly ground black pepper
1 tbsp olive oil
few peppercorns
3 tbsp white wine vinegar
knob of butter
250g/9oz butter
2 free-range egg yolks
2 sirloin steaks