1 large floury potato, peeled and quartered
陆 unwaxed lemon, finely grated zest only
2 large spring onions, finely sliced
55g/2oz plain flour
1 tbsp tartare sauce
sea salt and freshly ground black pepper
generous knob unsalted butter
1 small free-range egg, lightly beaten
250g/9oz fresh salmon fillets
40驳/1陆辞锄 panko breadcrumbs
60g/2录oz frozen peas, defrosted
splash white wine (optional)