Felicity Cloake's nine-step mushroom stroganoff skips the meat

Stroganoff is a savoury dish of sautéed beef in soured cream named after a 19th-century count, and only in the 20th century gained onions and mushrooms. Felicity Cloake's nine-step version drops meat entirely, using dried porcini, button and field mushrooms, onions, butter, nutmeg, soured cream and mustard, finished with chives or dill.