Need some Scaling help!

[brentt03]

So we scaled our Porter recipe from 3.5gal to 15gal and all turned out well, then we scaled our 15gal to 30gal and all DID NOT turn out well. IMO, we lost some of the color darkness, some roastiness and the hop profile was too strong. What I try to do when I scale recipes is basically double everything then fine tune the grains so that I hit the same stats as the smaller batches.

Take a look and see what you think??

Nom Nom Porter (15gal)
NOTES

Est. Pre-Boil Gravity: 1.061
Est. Post Boil Gravity: 1.066 (1.048-1.065)
Est. Final Gravity: 1.017 @65% Efficiency
ABV: 6.5%
SRM: 28.2 (22-35)
IBU’s: 47.3 (25-55)

Grains
Total Grain Weight: 41.45lbs
• Maris Otter – 30.00lbs
• Munich – 8.75lbs
• Chocolate Malt – 1.5lbs
• Black Patent – 9.6oz.
• Special B – 9.6oz.

Hops
Total Hops: 12.0oz
• Pearle – 3.00oz @ 60min
• Hallertauer
o 3.00oz @ 20min
o 3.00oz @ 10min
• Fuggles – 3.00oz @ 10min



Nom Nom Porter (1bbl)
NOTES

Est. Pre-Boil Gravity: 1.062
Est. Post Boil Gravity: 1.066 (1.048-1.065)
Est. Final Gravity: 1.017 @65% Efficiency
ABV: 6.5%
SRM: 28.0 (22-35)
IBU’s: 46.4 (25-55)

Grains
Total Grain Weight: 85.5lbs
• Maris Otter – 62.00lbs
• Munich – 18.00lbs
• Chocolate Malt – 3.00lbs
• Black Patent – 1.25lbs
• Special B – 1.25lbs

Hops
Total Hops: 24.6oz
• Pearle – 6.15oz @ 60min
• Hallertauer
o 6.15oz @ 20min
o 6.15oz @ 10min
• Fuggles – 6.15oz @ 10min