A bottle of Alexander Keith鈥檚 beer has been keeping Dal Engineering prof Andrew MacIntosh busy at work this week.
Don鈥檛 worry: it鈥檚 all on the up-and-up. Dr. MacIntosh, from the Department of Process Engineering and Applied Science, has been answering media calls from around the world after helping test a long-lost bottle of Alexander Keith鈥檚 beer discovered at the bottom of Halifax鈥檚 Northwest Arm this fall. The unopened bottle dates back to the 1800s.
鈥淚t was far more attention than I expected鈥� says Dr. MacIntosh. 鈥淔or some reason this is a story that has really taken off. We鈥檝e been in contact with Canadian Press, this morning we chatted with Global News on their breakfast show and [the Discovery Channel TV show] Daily Planet will be airing their segment [in an upcoming episode].鈥�
The Daily Planet visit, which happened while the tests were taking place, was particularly exciting for Dr. MacIntosh, as he grew up watching the show when it used to be called Discovery CA. 鈥淚t was quite a pleasure to move from them inspiring me as a kid to working with them now.鈥�
Lost and found
Amateur scuba diver John Crouse found the bottle in late November last year, near the Northwest Arm鈥檚 Dingle, buried in the mud under several meters of water. The bottle鈥檚 markings suggest it dates sometime between 1872 and 1890, with ink preserved on the cork indicating it as a product of 鈥淎. Keith鈥檚 Brewers.鈥�
The discovery was covered in local news outlets, which is where Dr. MacIntosh heard about it. 鈥淚 thought to myself that it would be a fun opportunity to test that,鈥� he recalls.
Another person who noticed the news coverage was Christopher Reynolds of Halifax鈥檚 Stillwell Beer Bar. He approached Crouse and, together, decided to get the bottle鈥檚 contents tested.
鈥淭hey contacted Propeller [Brewery],鈥� says Dr. MacIntosh, 鈥渁nd their QA manager Jessica Forbes is a former student of ours: she went through our Food Science program, and she completed research in the brewing field under Dr. Alex Speers. So she was familiar with the lab and what we are capable of doing so she pointed Chris in our direction.鈥�
Brew possibilities
A professor of chemical engineering and food science, Dr. MacIntosh says the two fields are very closely related.
鈥淚 specifically study fermentation which takes many forms,鈥� he explains. 鈥淸There鈥檚] pharmaceutical fermentation, when you are trying to create an antibiotic. We do bio algae fermentation to try to make biofuels and, of course, production of food products such as beers, ciders and eventually spirits.鈥� Dr. MacIntosh says the department does 鈥渁 lot of work with the local brewing market to try and advance their technology鈥� and that their connections to the Canadian Institute of Fermentation Technology (CIFT) help make that happen.
(File photo)
Dr. MacIntosh teaches a class called Advanced Brewing Science, which is mostly taken as an elective for Chemical Engineering students. It鈥檚 a class that鈥檚 well-aligned with the rising popularity of craft brewing.
鈥淭he students coming into that course are now more educated than they have been previously about the many different styles, the many different techniques that are used in brewing and that has helped to offer a much more involved course,鈥� says Dr. MacIntosh. 鈥淚t鈥檚 really a fun course to teach.鈥�
Many of the students are able to take what they鈥檝e learned into careers in brewing. Dr. MacIntosh says he knows of students working at Olands, Propeller, a brewery in England and one student at a brewing research station in the United States.
鈥淚t鈥檚 quite exciting to maintain connections with students who proceed into this field and see how it鈥檚 being done elsewhere in the world. One of our professors, Alex Spears, is on leave from Dalhousie but he鈥檚 now acting as the chair of the Institute of Brewing and Distilling in Scotland. So we鈥檙e really able to collaborate with people all around the world.鈥�
Testing the treasure
Dr. MacIntosh is looking forward to the science that will come from testing the contents of the discovered bottle.
鈥淎ll of the chemicals that make up the beer, whether it鈥檚 skunky or buttery, all of those have a peculiar chemical that contributes to that flavor. We can identify those, quantify those and it will give us some clues about the raw materials that were used in the production of that beer. They are set up to do that in Scotland with Dr. Speers, so we鈥檝e taken a sample that we鈥檒l be sending to him that鈥檚 leaving tomorrow [Friday] and between our two analyses we鈥檒l be able to paint a complete picture of that beer which we plan to publish.鈥�
Which begs the question: did Dr. MacIntosh get the chance to taste the 130-year-old brew?
鈥淎t the end [of the testing] we had a couple of millilitres left that couldn鈥檛 go back into the bottle. It tasted terrible. Beer does not age like wine. Don鈥檛 go drinking random bottles you find in the harbour.鈥�