I brewed this recipe again - March 11 2017.
Last time was over Thanksgiving holiday. Both were double batches and they were the first and second brew in my new 20 gallon kettle. The grain absorption rate was set at 0.6 l/kg the first time around and worked out well for me, in fact came out with a little more volume, so I used that value again. This brew for some reason fell short of the expected volume after the bag pull. Upon evaluation after the mash I figured it was 0.74 l/kg. I was short 2.4 L at VIB.
My Thanksgiving brew had an 11% evaporation rate and I was purposely targeting 8% this time around. I ran a test boil off rate prior to check what new power setting I needed to use. Previously at 65% power, I determined that 55% would hit 8%.
Knowing that I missed my volume when I pulled the bag, I went into panic mode and started calculating "what-ifs". I really wanted the same VFO if it would work out okay. I had to use my refractometer this time to help "guess" gravity. I got on
realbeer.com/hops and ran a scenario for a new 30 mins. hop addition. I ran with this and decided to eliminate my hop stand.
Today was yeast pitching day (3-22-2017). My VAP 39.90 l, OG 1.058/1, IBU 55.3, B/G Ratio 0.953
My evaporation rate was 6% and I took a hit on efficiency at 68% (estimated 76.6%)
Here is the recipe below. I will post more actuals and photos on the next post.
I Heart Me - American IPA - Batch 12
Brew Date 3-11-2017
Brewer: Mad Scientist
Style: 14B
Source Recipe Link:
ABV: 6.6%
Original Gravity (OG): 1.063
IBU's (Tinseth): 55
Bitterness to Gravity Ratio: 0.87
Colour: 14.3 EBC = 7.3 SRM
Kettle Efficiency (as in EIB and EAW): 76.6 %
Efficiency into Fermentor (EIF): 66.6 %
Note: This is a Pure BIAB (Full-Volume Mash): Sacharification
Times and Temperatures
Mash: 90 mins at 66 C = 150.8 F
Boil: 70 min
Volumes & Gravities
(Note that VAW below is the Volume at Flame-Out (VFO) less shrinkage.)
Total Water Needed (TWN): 56.75 L = 14.99 G
Strike Water Needed (SWN): 57.87 L = 15.29 G
Volume of Mash (VOM):
Volume into Boil (VIB): 51.4 L = 13.58 G @ 1.057/2 = 14 °P
Volume at Flame-Out (VFO): 46.66 L = 11.85 G with hop bag(s) in
Volume at Flame-Out (VFO): with hop bag(s) squeezed and pulled
Volume of Ambient Wort (VAW): 44.86 L = 11.85 G @ 1.063 = 15.4 °P
Volume into Fermentor (VIF): 39 L = 10.3 G @ 1.063 (Set in Section B, by brewer)
Forecasts By MS
Kettle to Fermentor Loss (KFL): 5.86 L (Estimated in Section X)
Estimated Wort Retained By Hops Loss: 0.94 L (total ozs. of hops x 0.045 G)
Estimated Volume into Fermentor: 38.06 L
Est. Final Gravity (FG): 1.012 = 3.0 °P
The Grain Bill (Also includes extracts, sugars and adjuncts)
84% Rahr 2 row (3.5 EBC = 1.8 SRM) 10463 grams = 23.07 pounds
10% Wey Munich type 2 (25 EBC = 12.7 SRM) 1246 grams = 2.75 pounds
6% Crisp Caramalt (52 EBC = 26.4 SRM) 747 grams = 1.65 pounds
Total Grain Bill weight 12456 grams = 27.46 pounds
The Hop Bill (Based on Tinseth Formula)
[actual hop bill used the day of the brew]
35.3 IBU Centennial Flowers (9.9%AA) 73.9 grams = 2.60 ounces at 80 mins (First Wort Hopped)
19.7 IBU Centennial Flowers (9.9%AA) 56.6 grams = 1.50 ounces at 30 mins
Miscellaneous Ingredients
1.00 Whirfloc (Boil) 5 Mins - Clarity
Chilling & Hop Management Methods
Hopsock Used: Y
Chilling Method: No-Chill
Fermentation & Conditioning
Fermentation: Safale US 05 for 21 days at 18.4 C = 65.12 F
Secondary Used: N
Crash-Chilled: Y
Filtered: N