Buying a wine in the best possible condition means buying it in a coloured bottle, says JOANNA SIMON.
This proves to be a problem if you're after ros, however, considering that most producers would prefer to show off the pretty pink colours rather than pay attention to a shield against light.
Marks and Spencer is the only retailer to throw caution to the wind with a green ros bottle, and Simon recommends 2005 Bourgogne Ros (8.99; Marks and Spencer).