May 2009 management briefingThis month's briefing is the latest edition of The Power 100 – the world’s most powerful spirits and wine brands 2009. Now in its fourth year, The Power 100 highlights the key issues and trends in the spirits and wine industry. It also identifies which brands are increasing their equity using a unique measure defined by measuring brand score and volume data. Produced by our partner Intangible Business, we once again present this comprehensive round-up of who's where in the league tables of drink