It's how you buy paint these days, apparently, and now you can have a go at a wine you like the look of without splashing out on the whole bottle. Decanter has the scoop on Asda's taster-bottle initiative. It's a challenge for the think-tank at Bubble Brothers, though: how do you convince people to buy a wine they haven't tasted? How do we do it? (How) can we do it better?