SandwichIsles
Nice to meet a fellow brewer.
I am only small scale at about four and a half gallons at a time and all grain brewing, with the very occasional kit.
Three or four years ago I brewed a Russian Stout with an original gravity (O.G.) of 1.092 and this finished fermenting at 1.022 giving about 9% alcohol by volume for the final beer.
From old recipes and peoples modern takes on them, original gravities averaging 1.080 for ordinary beers were the norm.
Our modern 3-5% beers with O.G.s of 1.030-1.040 were just table beers for use instead of dodgy well and pump water.
Beers of around 1.050 O.G. had a market but a lot were up at 1.090 plus.
Grain supply was not a problem, so gravities could be high. As I pointed out earlier war time restrictions led to less grain being available and weaker beers being made. Alcohol levels steadily declined to the stuff we drink in the UK now. They never went back up.
A few examples of old recipes …140/- Ale 1810 Brakspear’s O.G. 1.100
XXXXX Ale 1903 Hammond’s United Breweries, Bradford O.G.1.102
Dorchester Ale circa 1800 O.G. 1.100
Old Burton Ale 1824 The Young Brewers Monitor O.G.1.145
Yorkshire keeping beer 1763 Chatham Brewery O.G. 1.134
I hope the non brewers are still with me and just a brief explanation for them.
In beer brewing the grain is processed to release the sugars. The yeast is added to the resulting liquid and ferments the sugars into alcohol. The More sugars in the liquid at the start of fermentation, the more can be converted to alcohol. So a high original specific gravity(O.G.) means more sugar, more sugar equals more alcohol fermented out. and so stronger beer.
As for Yorkshire Keeping Beer… Keeping Beers were brewed in winter and kept in store for use in the hot summer months in the UK. Beer needs to be fermented at controlled temperatures, too hot and off flavours develop, in the good old days we had no refrigeration plants to cool the fermentation in hot summer weathers. High alcohol beers inhibited infection in the product. So beer was brewed in winter and stored for summer distribution. Some porters were matured in huge vats for three to four years. Costly storage had to be provided. Low alcohol quick turnaround beers were a boon to brewers and cheaper to the public.
The old recipes had incredible high gravities compared to todays commercial beers. So beers of old were a lot stronger than todays.
My Russian Porter at 1.092 O.G. and alcohol level by volume of 9% gives you an idea of how strong beers were in those days.
If SandwichIsles is looking for a good book of old, strong recipes you couldn’t do better than a booklet published by a British Brewing Circle as follows.
Old British Beers and How To Make them
by Dr. John Harrison and Members of The Durden Park Beer Circle.
It also has a good amount of history for such a small book.
Well worth a look at their website, they had a couple of their recipes on it the last time I looked and their booklet was a very good buy with about 130 recipes for named old beers.
A word of warning, some need maturing for over a year.
Another book I have is The Home Brewers Guide to Vintage Beer. by Ron Pattinson.
Lots of strong named ale recipes balanced with an equal amount of history.
In conclusion… I think the beer was pretty strong in those days.
I rest my case M’lud.