Ryat66
Well-Known Member
Hi all! Long-time lurker, first time poster.
I just brewed CYBI's Mirror Pond clone today. I scaled it from their 6 gallon batch at 70% to my preferred 5.5 gallon batch at 72% using BeerSmith. Process wise, I was pretty happy; initial mash-in was a tad warm at 4 degrees above my 149 target but I had it down to target in less than 5 minutes and it only lost 1 degree over the 75 minutes. Pre-boil gravity was exactly what BeerSmith estimated, 1.039 with 7.6 gallons (1.3 gal/hr boil-off) pulled for the 90 minute boil. After boiling and chilling I was at 5.4 gallons but measured the SG at 1.060, the recipe called for 1.054! This would make perfect sense if I got careless and boiled down too far, 5.4 gallons vs. 5.5 gallons is peanuts in my book...
I am somewhat afraid of what the end result might be here. I am expecting it to finish a little high but not overly high because of the lower mash temperature and a little more fermentable wort. I know it's just speculation but any ideas on what I might expect out of the end product?
Oh, here is something that came to mind: the sample was fairly littered with trub but could that make me appear to be 6 gravity points higher than anticipated? That seems unlikely but maybe I'm underestimating the trub's effect on the sample.
Anyway, here is the recipe in case anyone wants to see it. Most importantly, thanks in advance for any input on what might've happened here.
Recipe Specifications
--------------------------
Boil Size: 7.67 gal
Post Boil Volume: 5.72 gal
Batch Size (fermenter): 5.50 gal
Bottling Volume: 5.50 gal
Estimated OG: 1.054 SG
Estimated Color: 10.6 SRM
Estimated IBU: 41.4 IBUs
Brewhouse Efficiency: 72.00 %
Est Mash Efficiency: 72.0 %
Boil Time: 90 Minutes
Ingredients:
------------
Amt Name Type # %/IBU
10 lbs 9.0 oz Pale Malt (2 Row) UK (3.0 SRM) Grain 1 91.4 %
12.9 oz Caramel/Crystal Malt - 80L (80.0 SRM) Grain 2 7.0 %
2.9 oz Cara-Pils/Dextrine (2.0 SRM) Grain 3 1.6 %
0.80 oz Cascade [6.90 %] - Boil 85.0 min Hop 4 24.7 IBUs
0.80 oz Cascade [6.90 %] - Boil 30.0 min Hop 5 12.6 IBUs
1.10 Items Whirlfloc Tablet (Boil 15.0 mins) Fining 6 -
0.50 tsp Yeast Nutrient (Boil 10.0 mins) Other 7 -
0.80 oz Cascade [6.90 %] - Boil 5.0 min Hop 8 4.1 IBUs
0.80 oz Cascade [6.90 %] - Boil 0.0 min Hop 9 0.0 IBUs
1.0 pkg English Ale (White Labs #WLP002) [35.49 Yeast 10 -
0.75 oz Cascade [6.90 %] - Dry Hop 5.0 Days Hop 11 0.0 IBUs
Mash Schedule: Single Infusion, Medium Body
Total Grain Weight: 11 lbs 8.8 oz
----------------------------
Name Description Step Temperat Step Time
Mash In Add 18.63 qt of water at 164.2 F 149.0 F 75 min
Mash Out Add 9.97 qt of water at 210.4 F 168.0 F 10 min
Sparge: Fly sparge with 2.97 gal water at 168.0 F
I just brewed CYBI's Mirror Pond clone today. I scaled it from their 6 gallon batch at 70% to my preferred 5.5 gallon batch at 72% using BeerSmith. Process wise, I was pretty happy; initial mash-in was a tad warm at 4 degrees above my 149 target but I had it down to target in less than 5 minutes and it only lost 1 degree over the 75 minutes. Pre-boil gravity was exactly what BeerSmith estimated, 1.039 with 7.6 gallons (1.3 gal/hr boil-off) pulled for the 90 minute boil. After boiling and chilling I was at 5.4 gallons but measured the SG at 1.060, the recipe called for 1.054! This would make perfect sense if I got careless and boiled down too far, 5.4 gallons vs. 5.5 gallons is peanuts in my book...
I am somewhat afraid of what the end result might be here. I am expecting it to finish a little high but not overly high because of the lower mash temperature and a little more fermentable wort. I know it's just speculation but any ideas on what I might expect out of the end product?
Oh, here is something that came to mind: the sample was fairly littered with trub but could that make me appear to be 6 gravity points higher than anticipated? That seems unlikely but maybe I'm underestimating the trub's effect on the sample.
Anyway, here is the recipe in case anyone wants to see it. Most importantly, thanks in advance for any input on what might've happened here.
Recipe Specifications
--------------------------
Boil Size: 7.67 gal
Post Boil Volume: 5.72 gal
Batch Size (fermenter): 5.50 gal
Bottling Volume: 5.50 gal
Estimated OG: 1.054 SG
Estimated Color: 10.6 SRM
Estimated IBU: 41.4 IBUs
Brewhouse Efficiency: 72.00 %
Est Mash Efficiency: 72.0 %
Boil Time: 90 Minutes
Ingredients:
------------
Amt Name Type # %/IBU
10 lbs 9.0 oz Pale Malt (2 Row) UK (3.0 SRM) Grain 1 91.4 %
12.9 oz Caramel/Crystal Malt - 80L (80.0 SRM) Grain 2 7.0 %
2.9 oz Cara-Pils/Dextrine (2.0 SRM) Grain 3 1.6 %
0.80 oz Cascade [6.90 %] - Boil 85.0 min Hop 4 24.7 IBUs
0.80 oz Cascade [6.90 %] - Boil 30.0 min Hop 5 12.6 IBUs
1.10 Items Whirlfloc Tablet (Boil 15.0 mins) Fining 6 -
0.50 tsp Yeast Nutrient (Boil 10.0 mins) Other 7 -
0.80 oz Cascade [6.90 %] - Boil 5.0 min Hop 8 4.1 IBUs
0.80 oz Cascade [6.90 %] - Boil 0.0 min Hop 9 0.0 IBUs
1.0 pkg English Ale (White Labs #WLP002) [35.49 Yeast 10 -
0.75 oz Cascade [6.90 %] - Dry Hop 5.0 Days Hop 11 0.0 IBUs
Mash Schedule: Single Infusion, Medium Body
Total Grain Weight: 11 lbs 8.8 oz
----------------------------
Name Description Step Temperat Step Time
Mash In Add 18.63 qt of water at 164.2 F 149.0 F 75 min
Mash Out Add 9.97 qt of water at 210.4 F 168.0 F 10 min
Sparge: Fly sparge with 2.97 gal water at 168.0 F