Barley wine There are two primary styles of barley wine: the American which tends to be more hoppy and bitter with colours ranging from amber to light brown and the English style which tends to be less bitter and may have little hop flavour, with more variety in colour ranging from red-gold to opaque black. Until the introduction of an amber-coloured barley wine under the name Gold Label by the Sheffield brewery Tennant's in 1951 (later brewed by Whitbread), British barley wines were always dark in colour. The beer writer Michael Jackson referred to a barley wine by Smithwick's thus: "This is
Alcoholic drink benefits and risks of consuming alcohol in moderation." Alcoholic drinks are classified by the International Agency for Research on Cancer (IARC) as a Group 1 carcinogen (carcinogenic to humans). IARC classifies alcoholic drink consumption as a cause of female breast, colorectum, larynx, liver, esophagus, oral cavity, and pharynx cancers; and as a probable cause of pancreatic cancer. In the alcoholic drinks industry, congeners are substances produced during fermentation. These substances include small amounts of chemicals such as occasionally desired other alcohols, like propanol and 3-methyl-1-butanol, but also compounds that are never desired such as acetone, acetaldehyde and glycols. Congeners are