Monteith's Single Source Beer First 100. The name Single Source embodies an emphasis on craft and the ultimate traceability of the beer, down to the paddock, batch and bottle number. Brewed, grown and sourced from New Zealand's South Island, the black bottle protects the beer from the harmful sunlight, and the label bears a journey line depicting its creation. The first 100 bottles, signed and numbered by the brewer, were packaged as collectible boxed sets, each in black foam casing in a printed recycled board sleeve with a wax seal.