The Chronicles of SNB Brewing: Farmrose IPA

The dueling brew kettles
Thanks again Marshall

The other thing that Daniel’s quad brewday inspired me to do was make a parti-gyle beer off of second runnings of Westbennetteren 12. I’d been wanting to do one since the parti-gyle episode of Brewing TV, in fact if it wasn’t for the reality of being plan out of fermenter space I would have done a Damien inspired black ale off of the second runnings from 33.

After talking to Daniel and reviewing his parti-gyle small beer I was concerned that my second running gravity would be too small for what I wanted. I therefore hatched a crazy plan to add about 5.5lbs of additional grain to the mash tun and re-mash at 155 for about 30 minutes to see if I could boost it up. I decided that once the mash was done I would take a pre-boil gravity reading and supplement with some DME to raise the OG target to produce a beer in the 5-6% abv range. In order to have any chance of doing this in a reasonable time frame I determined that I would need a second pot, burner and propane tank. This is where having a close circle of fellow brewers is great. I asked my buddy Marshall if I could borrow what I needed and he came through like a boss.

Going in I had already decided to use a second generation WLP670 American Farmhouse Blend strain that I had harvested from SNB can be CynicAle. I really want to make an IPA with the second runnings and had been toying around with using WLP670 for an IPA since BeanyTink’s Farmstead Ale was first brewed. All I needed to come up with was a nice IPA hop schedule, but to do that I need to know what my gravity would be.

The 5.5lbs of additional grains

My pre-boil gravity came in really low at 1.030 with an estimate OG or 1.041 and abv of 3.8%. I decided to add a pound of Golden Light DME and a little over a pound and a half (1lb 10oz) of Pilsen DME to bump the pre-boil gravity to 1.046 and targeted OG to 1.063. Once I was happy with my targeted gravity it was time to add the hops After having recently played around with a Melrose IPA recipe I’d found online, I decided that I would use that hop schedule and bitterness ratio (1.436 IBU/SG). This was a simple trick of scaling down the recipe while adjusting the OG and hop schedule to keep everything in alignment.

This is why I was frustrated when the post-boil gravity came in at 1.055 – 8 points under target. I put a lot of thought into building this on the fly recipe based around the pre-boil gravity measurement. I think there is an error somewhere in calculations that BeerSmith 2 is giving me. I willing to bet that it has something to do with my equipment setting as I noticed it worsen when I changed from Brew Pot (15 Gal) and Igloo/Gott Cooler (10 Gal) to the SNB Brewhouse (Keggle and Cooler) setup. I’ll have to play around with it more by returning to the old setting on my next brew.

Cheers

- SNB

Farmrose IPA
American IPA
Type: All Grain Date: 1/28/2012
Batch Size (fermenter): 5.00 gal
Brewer: Scott Bennett
Boil Size: 7.37 gal
Boil Time: 60 min
Equipment: Marshall's Kettle and My Cooler

Beer Profile
Est Original Gravity: 1.063 SG
Measured Original Gravity: 1.055 SG (Boooo!)
Est Final Gravity: 1.015 SG
Estimated Alcohol by Vol: 5.1 %
Bitterness: 80.2 IBUs

Ingredients

Malt
3.00 lb Pale Malt (2 Row) US (2.0 SRM)
1.00 lb Victory Malt (25.0 SRM)
0.50 lb Cara-Pils/Dextrine (2.0 SRM)
0.50 lb Caramel/Crystal Malt - 15L (15.0 SRM)
0.50 lb Carared (20.0 SRM) Grain 5 5.0 %
2.00 lb Parti-gyle Efficiency Toggle (8.0 SRM)
1.55 lb Extra Light Dry Extract (3.0 SRM)
1.00 lb Light Dry Extract (8.0 SRM)

Hops
0.40 oz Amarillo Gold [9.30 %] - First Wort 60.0 min
1.00 oz Columbus (Tomahawk) [10.90 %] - Boil 60.0 min
0.80 oz Simcoe [12.20 %] - Boil 30.0 min
0.70 oz Amarillo Gold [9.30 %] - Boil 15.0 min
0.80 oz Amarillo Gold [9.30 %] - Boil 0.0 min

Yeast
1.0 Starter of Second Generation American Farmhouse Blend (White Labs #WLP670)

Other
1.00 Items Whirlfloc Tablet (Boil 15.0 mins)
1.00 oz Yeast Nutrient (Boil 15.0 mins)

Mash Profile

Mash Name: Single Infusion, Full Body, Batch Sparge Total Grain Weight: 10.05 lb
Sparge Water: 7.11 gal Grain Temperature: 72.0 F
Sparge Temperature: 168.0 F Tun Temperature: 72.0 F
Adjust Temp for Equipment: FALSE Mash PH: 5.20

Mash Steps
Name Description Step Temperature Step Time
Mash In Add 1.72 gal of water at 168.2 F 156.0 F 30 min
Sparge Step: Batch sparge with 2 steps (3.03gal, 4.09gal) of 168.0 F water

Notes
Mashup of Melrose IPA hop schedule with American Farmhouse yeast 2nd generation and second running + new malt from Westbennetteren 12

Pictures