In his occasional series on great wines of the world, Ken Gargett tells the story of an extraordinary pigeon pair, Lindeman’s Twin Bin wines from 1965, the Hunter Burgundies Bin 3110 and Bin 3100. Their story is fascinating and includes drought, overproduction, grapes that were far riper than usual when picked, and a mysterious dollop of Pinot Noir. The result is one of the world’s greatest wines.