"Black sheep" is a reference to straying from the herd, in this case the arabica herd, as the Black Sheep outfit sees it. Yes - staggeringly - they're working with pure robusta beans. They roast their own carefully sourced beans (rather than just getting in a truckload of Nescafé), which is their USP. They've set up in a cafe in Camden and a mobile cart (sometimes in Leather Lane, sometimes Brick Lane), trying to convert the arabica-loving masses to the new (old) flavour. You have to admire their enthusiasm and determination. Having said that, I'd like to report I found something, anything at all, to like about the coffee. But I just couldn't. It had a heavily smoky fragrance, and tasted of coal and burnt toast to me. I managed to swallow the second sip, but couldn't make myself take a third. I s'pose I'm just one of the herd. Baa.