Home Learn Double magnum Decanter Staff November 11, 2010 Bottle of 3 litres equivalent to 4 normal (75cl) bottles. In Champagne this size is called jeroboam. Written by Latest Wine News A Spectacular Day at the 27th DFWE London Scotch producer claims Guinness World Record for ‘The Greatest Variety of Flavours in a Whisky’ French protests: Growers block motorway and hijack lorries containing Spanish wine Baudains: Are old vines important? Trump returns: The impact on the US wine industry