Sealed Guinness bottles discovered on a shipwreck in the English Channel could provide researchers with a rare insight into nineteenth-century brewing. Scientists are now preparing to analyse the contents, in the hope of learning more about historic brewing techniques and the ingredients used more than 160 years ago.
162-year-old Guinness
A team of wreck divers discovered up to 20 Guinness bottles on a shipwreck off Dover. The divers believe the wreck is the barque Mindora, which sank on 27 November 1864 after a collision. Lloyd’s Register Foundation has not yet officially confirmed the vessel's identity, but historical survey records strongly suggest that the wreck is Mindora. Several of the bottles remained sealed despite spending more than 160 years on the seabed.
Exceptionally preserved
The bottles rested at a depth of around 50 metres in water measuring approximately 4°C, in complete darkness and under high pressure—conditions that may have helped preserve their contents. Researchers at KU Leuven in Belgium will analyse samples to determine whether traces of the authentic ingredients or historic yeast strains can still be identified.
Although living yeast is considered unlikely to have survived, modern DNA analysis may enable scientists to identify microorganisms closely related to those used by Guinness in the mid-nineteenth century. The findings could improve understanding of historic brewing practices, while contributing to recreating a beer closely resembling the original.
A valuable wreck
The discovery illustrates the scientific importance of historic shipwrecks. In addition to preserving artefacts such as ceramics, glassware and cargo, underwater sites can sometimes protect organic material that rarely survives in terrestrial archaeological environments.
According to the divers, shifting sandbanks around the wreck periodically expose different sections, before covering them again. As a result, additional artefacts may remain buried beneath the seabed.
Brewing and archaeology
The discovery has attracted interest from both brewing historians and Guinness. The company’s archives at St James’s Gate in Dublin are now being compared with the recovered bottles and historical brewing records from the 19th century. Whether the analyses will ultimately lead to the recreation of an 1864 Guinness remains uncertain, but the bottles already represent a rare intersection of maritime archaeology, industrial heritage and food science.
For divers, the discovery is another indication that historic shipwrecks continue to yield new knowledge long after they disappear beneath the waves. Even apparently ordinary cargo can provide valuable evidence of trade, seafaring and everyday life during the Victorian era.
