For my annual fall pumpkin beer this year, I decided to switch up the base recipe. In 2011 I did a rye ale base and in 2010 I did just a basic amber/pale ale base. 2012 is the year of the lager for me (#2012!), so I opted to do a helles base. Thought it would set a decent, unobtrusive stage for the pumpkin to shine through. Also, pumpkin… halloween… hell-es… Sounded appropriate.
I brewed this on 8/26, back when it was still relatively warm out. It was really tough to get the wort down to lager pitching temp (low 50’s). My ground water+immersion chiller only took it to 78°F, after which I transferred to the fermenter and let it cool further in the fridge. I woke up by happenstance at around 2:00am (5 hrs. after putting the fermenter in the fridge) and the temp had made it to the low 50’s, so I pitched at that time. When I woke up the next morning, the temp had continued to drop all the way down to the mid-low 40’s. Oops! I turned the temperature regulator up further on the fridge and brought the temp of the wort back up to the 50’s over the next day. I believe this attributed to a slow start to fermentation. All in all, it took nearly 36 hrs. for visible signs of fermentation to show. Something I’ll make sure to do better in the future is to calibrate the temp of my chest fridge/freezer further ahead of time when I plan to ferment in there. For this brew day, I didn’t turn up the temp until I started brewing. I really should allot 48 hrs. to accurately move the temp from 37°F (where it generally sits) up to the low 50’s for lager fermentation.
Here’s the recipe (based on Jamil’s helles in Brewing Classic Styles):