Purple sprouting broccoli, or ‘PSB’ as we call it in the kitchen, is a brassica and close cousin of the tighter headed and more common calabrese or green broccoli. Don’t worry too much about the lower leaves that come with it, it’s the tender purple heads that hold the sweet flavour. Be careful not to overcook it – best steamed and checked for done-ness with a round-ended knife to see if it slips easily through. Simple melted butter or a more adventurous hollandaise sauce are both a very good friend to PSB.