I have this IPA that's been on tap for a couple weeks. Started out great, nice bitterness, good aroma, good head and lacing, took a while to clear but it's still got the ss hop basket in it. So it's cleared really well in the last 2 weeks but gotten progressively flatter. The first one I poured tonight had almost no head but you could see the CO2 rising out of it for the first few seconds in the glass. The third one I poured had only a few bubbles and is very flat. These were 12 oz pours.
It did go through a couple of losses of pressure along the way but for the last couple weeks it's been on gas and the keg has stayed pressurized.
Can a beer just suddently decide not to hold CO2 any longer?
It's my usual pale ale grist bill and process. Recipe and notes below.
BeerSmith 2 Recipe Printout - http://www.beersmith.com
Recipe: Rogue IPA
Brewer: Danny Clarke
Style: American IPA
TYPE: All Grain
Boil Size: 6.68 gal
Post Boil Volume: 5.68 gal
Batch Size (fermenter): 5.25 gal
Bottling Volume: 5.00 gal
Estimated OG: 1.060 SG
Estimated Color: 6.4 SRM
Estimated IBU: 70.6 IBUs
Brewhouse Efficiency: 80.00 %
Est Mash Efficiency: 83.0 %
Boil Time: 60 Minutes
Amt Name Type # %/IBU
5 lbs 8.0 oz Vienna Malt (Avangard) (3.0 SRM) Grain 1 50.0 %
5 lbs Briess 2 Row (1.8 SRM) Grain 2 45.5 %
8.0 oz Caramel/Crystal Malt - 40L (40.0 SRM) Grain 3 4.5 %
0.50 oz Amarillo [8.00 %] - First Wort 60.0 min Hop 4 15.4 IBUs
0.50 oz Cascade [9.00 %] - First Wort 60.0 min Hop 5 17.3 IBUs
0.65 oz German Magnum [13.00 %] - Boil 60.0 min Hop 6 29.5 IBUs
1.00 tsp Irish Moss (Boil 10.0 mins) Fining 7 -
0.50 oz Amarillo [8.00 %] - Boil 5.0 min Hop 8 2.8 IBUs
0.50 oz Cascade [9.00 %] - Boil 5.0 min Hop 9 3.1 IBUs
0.50 oz Amarillo [8.00 %] - Boil 2.0 min Hop 10 1.2 IBUs
0.50 oz Cascade [9.00 %] - Boil 2.0 min Hop 11 1.3 IBUs
1.0 pkg American Ale II (Wyeast Labs #1272) [124 Yeast 12 -
1.00 oz Amarillo [8.00 %] - Dry Hop 3.0 Days Hop 13 0.0 IBUs
1.00 oz Cascade [9.00 %] - Dry Hop 3.0 Days Hop 14 0.0 IBUs
Mash Schedule: BIAB - Danny's
Total Grain Weight: 11 lbs
Name Description Step Temperat Step Time
Mash in Kettle Add 17.93 qt of water at 161.9 F 152.0 F 60 min
Sparge Add 12.00 qt of water at 195.0 F 168.0 F 10 min
Sparge: If steeping, remove grains, and prepare to boil wort
mashed in 6 gals had to alter grain bill because not enough 2 row
easy brew day.
pitched entire 1272 cake from 1/25/17 cent IPA, 62 degrees
2/16 good heavy krauesen early AM
2/18 Had similar fermentation as last one using this yeast. Krauesen started to fall then 3-4 inches light bubbly foam temp 61-63
3/15 purged and kegged, DH'd at room temp, under pressure in bag
3/22 put in lager fridge and on gas
3/26 Chest fridge was full of CO2 and cylinder was low. checked all lines and connections seems ok. appeared to be leaking from lid, pulled bag and replaced with DH with fresh.
5./2 pretty in your face bitterness. Seems clean and palatable. Starting to flear but seems to be losing carbonation.
The CO2 situation ended up being the distributor. Took the center check valve off and taped and replaced to stop leak.
5/12 flat after a couple pints are pulled. Cylinder is at 10psi.