A bin is a storage area in a wine cellar. After each harvest, wines were allocated the same bin year after year. With time, the bin number becomes associated with the wine – for example, the Shiraz was stored in bin 50, the Chardonnay in bin 65. It is often the case that bin numbers become brand names depicting the style of a wine. The number has nothing to do with the origin of the grapes or where the wine has been stored!