The Sky's Gone Out - Cascadian Dark Ale/Black IPA
Finally dragged myself out of the "can't be arsed" fug I was in. Needless to say the Sabro Golden Ale didn't materialise. So, I decided to take a trip down controversial street and brew a Black IPA. I really struggled to find good points of reference on-line for this. Advice ranged from "brew a stout and add more hops" to make an IPA and chuck some roasted malts in" which wasn't what I was looking for. I want that high hop flavour and aroma you associate with an IPA but also some of those malt characteristics you get from a stout; particularly the caramel and toffee. One thing I was certain on was the use of the Cascadian Hops.
Grain Bill (for 20.5 L)
3.8 Kg Maris Otter (73%) - crisp malt with toastiness
0.7 Kg Munich (13%) - to provide the caramel notes
0.4 Kg Rye (8%) - to provide spice/pepper. * Checking my notes - I should have limited to 1-3% to avoid impacting on style. Not sure how I overlooked that.
0.26 Kg Carafa III (5%) - for coffee, chocolate and roasted flavours. Kept to a light touch so as not to overpower the beer.
0.05 Kg Flaked Barley to impart a slight creaminess to the mouthfeel and aid with head retention
Hops
Cascadian varieties all the way
15 g each Cascade and Centennial @ 60 mins
9 g each Cascade and Centennial @ 15 mins
9 g each Cascade and Centennial @ 5 mins
9 g each Cascade and Centennial @ flameout
IBU:SG ratio was 0.98 which is to style (0.8-1.0 recommended)
I will also dry hop with 28 g each of Cascade and Centennial 3 days before kegging
Water
I used the Palmer and Kaminski bible recommendations for dark beers as my base and went with
Calcium 90 ppm
Chloride 75 ppm
Sulphate 100 ppm
Bicarb 110 ppm
Yeast
US-05
Mash was 90 mins @66 C
Boil was 60 mins
On to the brewday itself. It was the second run out for the grainfather grain mill and it works a treat. I went with the MaltMiller recommended settings of speed 4 for everything, gap setting 6 for the pale and roatsed malts, gap setting 4 for the rye and gap setting 3 for the flaked barley.
The first mistake I made was on mashing in. I forgot to turn off the heating elements on the Zilla while I was stirring in the malt. Second mistake was that I overshot the lactic acid addition to bring my pH down from 5.68 to 5.2. I somehow ended up at 4.95! I rectified this by adding a scientifically calculated smidge of bicarb of soda. I ended up at pH 5.22. Happy days.
I hit all my numbers and ended up with 20 L wort in the FV at an O.G of 1.058 (target 1.056 and 20.5 L in the FV). Mash efficiency was 86% and Brewhouse efficiency was 72.5.
I remembered that my wife had bought me an iSpindel so quickly set that up and chucked it in the FV. I didn't have time to calibrate it but it was reading 1.061 which was close enough for me. I have to say that I didn't understand the notes that came with it (luddite) but I found a great video by Opensource distilling that shows exactly how to set it up. I was able to follow this to the letter.
I messed up on the reading interval setting so I am not able to capture data over a whole day. Ubidots, the software I am using to run the iSpindel only allows you to capture a certain amount of data a day. I need to re-configure the iSpindel with less frequent data capture when I fish it out at the end of fermentation.
It was relatively straightforward to set up a dashboard of the data I am interested in.
Overall, a successful brewday
Over and Out