Fizzing me off

Discussion in 'Homebrewing' started by butterygold, Aug 23, 2021.

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  1. butterygold

    butterygold Devotee (343) May 12, 2020 Spain

    Hello out there,

    I've been doing some research here and elsewhere in order to solve a problem that has been coming up (literally) a lot in my last few brews: fizzers.

    For some reason, it happens more with hoppy brews than wheat beers. After about two months a long jet of foam comes shooting out, leaving about 1/4 of a beer in the bottle. It's not a violent explosion that shoots the cap to the roof or anything. This is usually accompanied by a loss in flavor - it's not an off-flavor per say, it's a loss of hop character and an increasing red apple sweetness. (@VikeMan, if it's oxidation, I apologize, but I don't think so in this case...)

    It could be incomplete fermentation - true, I generally just bottle two weekends after brewing
    It could be over-priming: I use a calculator that measures style, volume and temp, so unlikely.
    It could be wild bacteria - possible, but I wash the bottles in the dishwasher after use and then soak in Star San before bottling.

    This brings me to doubt number one - is soaking the bottles in Star San enough? When I say 'soaking' I mean submerged with liquid inside.

    If it is indeed oxidation, and I just refuse to learn, I would also like to take some steps to prevent that.
    @JackHorzempa has suggested a leaky siphon might be the culprit. I will probably replace my year-old one and maybe buy a new plastic fermenter, as I have read they can harbor wild yeast that's hard to get out.

    @MrOH suggested using Camden and Vitamin C to reduce oxidation, which brings me to my next question (potentially stupid): can you 'over fine' a beer? If you add gypsum, calcium chloride, Irish Moss, Camden, ascorbic acid... can this have a negative sum effect?

    I was pouting for a while and thinking about scrapping the whole thing, but I think I'm ready to brew up a west coast IPA in a week or so. I will do all grain and a 5-gallon batch.

    Sorry if this is a bit rambling and thanks in advance for any advice.
     
  2. VikeMan

    VikeMan Grand Pooh-Bah (3,067) Jul 12, 2009 Pennsylvania
    Pooh-Bah

    If you're getting gushers with hoppy beers but not with non-hoppy beers, I'd be looking at Hop Creep as a possibility. What does your dry hopping process look like? Also, are you measuring FG 2-3 days apart to make sure FG is stable before bottling?

    Regarding loss of hop character and increasing sweetness, that does sound like oxidation. It also sounds like a separate problem from the gushing.

    Gushing can be caused by infection, but I haven't heard of any microbes that increase sweetness.
     
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  3. butterygold

    butterygold Devotee (343) May 12, 2020 Spain

    That's very interesting about hop creep. I just read a little about it, and how higher levels of dry hops can lead to this. A common thread among the gushers is a higher quantity of hops for dry hopping. Two successful IPAs I've brewed had one ounce of Citra and then the other had an ounce each of Moteuka and Idaho 7.

    The last gusher had 4 ounces between Simcoe, Mandarina Bavaria and Amarillo.
    The previous gusher had 3 ounces of Centennial.

    Coincidently, I will be re-brewing the IPA that had just an ounce of Citra. Maybe I will add more hops at 5 minutes or flameout and keep the dry hopping to one ounce.

    Thanks!
     
  4. JackHorzempa

    JackHorzempa Grand Pooh-Bah (3,375) Dec 15, 2005 Pennsylvania
    Society Pooh-Bah

    Please provide more details about your dry hopping process. Specifically how long is your contact time for dry hopping.

    Cheers!
     
  5. butterygold

    butterygold Devotee (343) May 12, 2020 Spain

    The last few batches, I have:

    Boiled marbles and then boiled the hop sock
    Soaked the hop sock in Star San
    Added it as quickly as possible to not expose the beer too much.

    For the last two gushing IPAs this was done on day 7 and the beer was bottled on day 14/15.
     
  6. JackHorzempa

    JackHorzempa Grand Pooh-Bah (3,375) Dec 15, 2005 Pennsylvania
    Society Pooh-Bah

    How hop creep is 'addressed' likely is dependent on type of hops and amounts but I would have guessed that 7/8 days of contact time would be sufficient but maybe that guess is wrong?

    FWIW I always permit my dry hops to have a longer contact time (e.g., 10 days) and I have never experienced any "fizzing" issues. From what I have read in the homebrewing forum plenty of folks have shorter contact times (e.g., 3/4 days) but if they are kegging their beers the issue of hop creep is a lesser issue.

    My suggestion is that for your next hoppy beer let the dry hop contact time go longer (e.g., 10 or more days) and see how that batch fares as regards the aspect of "fizzing".

    As to the topic of "increasing red apple sweetness" that does not sound like it is a consequence of hop creep to me. It would seem that is a separate issue. Hopefully between your planned steps of obtaining a new siphon (FWIW I perform my siphoning the old fashioned way - I do not use an auto-siphon) and a new fermenter this will eliminate/mitigate any impacts of oxidation.

    Cheers!
     
  7. butterygold

    butterygold Devotee (343) May 12, 2020 Spain

    Thanks to both of you.
     
  8. billandsuz

    billandsuz Pooh-Bah (2,097) Sep 1, 2004 New York
    Pooh-Bah

    One word. Kegs.

    Let's be sure you are not overpriming before we eliminate the most likely cause of foaming.

    Weigh your priming sugar, it is much more accurate than using volume. If you overprime, the residual sugar is going to increase sweetness.

    Determine the volume of liquid you are actually bottling. It's probably less than 5 gallons and if you enter 5 gallons in the calculator it's going to give a higher weight of sugar.

    Check that the sugar you are using is the sugar you are using to calculate.

    There is some minor variation that accounts for some present dissolved CO2. All fermented beer will have a bit, even though you might not see it. If the beer remained cold throughout fermentation and resting it is going to have a pretty good CO2 content before you add any priming sugar.

    Chill your bottles as cold as possible, as this will help to reduce foaming.

    You can usually tell if the beer is infected, it's going to taste like an infected beer.

    As for hop creep, well, not my bag. I'll let the others guide you.

    Cheers
     
  9. JackHorzempa

    JackHorzempa Grand Pooh-Bah (3,375) Dec 15, 2005 Pennsylvania
    Society Pooh-Bah

    But he is not having over-carbonation issues with his non-hoppy beers. If overpriming is the problem those beers would "fizz" too.

    Cheers!
     
  10. butterygold

    butterygold Devotee (343) May 12, 2020 Spain

    Thanks for the reply.

    I use corn sugar, select that option on the calculator and weight it. When judging volume I try to go by the markings on the fermenter.

    I know I should refrigerate the beers ASAP, but I have limited space and it's hot right now where I live.

    Someday I will keg! Maybe next year I will start exploring equipment options. I am just starting to get the hang of BIAB though and bought a lot of equipment that I need to use for a while.
     
  11. butterygold

    butterygold Devotee (343) May 12, 2020 Spain

    I've just read that dry hopping closer to active fermentation is a way to minimize hop creep. I will try day three next time, but this has always made me worry that if fermentation goes long, the hops will be in there for more than 12 days, which I've read can lead to grassy flavors (it also makes me afraid to fish them out of the fermenter, thus exposing the beer to more oxygen..)

    Thanks
     
  12. JackHorzempa

    JackHorzempa Grand Pooh-Bah (3,375) Dec 15, 2005 Pennsylvania
    Society Pooh-Bah

    Just be aware that adding the dry hops 'early' will result in some (a lot?) of the hop aroma being out-gassed through the airlock. I personally choose to add my dry hops after all signs of primary fermentation is complete because I want all of the hop's essential oils to remain in the beer. But this is your beer so you get to choose here.
    I have read the same but I have never had this happen to any of my beers and I have several times had dry hop contact times of 14 days. In my opinion this whole grassy thing is not a thing.

    Also I have read folks post that they dry hop their hoppy beers in their kegs and just let them sit there for the length of time it takes to drink the entire keg and they never experienced "grassy" in their beers.

    But once again this is your beer so you get to choose.

    Cheers!
     
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  13. MrOH

    MrOH Grand Pooh-Bah (3,995) Jul 5, 2010 Virginia
    BA4LYFE Society Pooh-Bah

    I'm not as knowledgeable as others on here, but I wouldn't think that it would be possible as long as you're not using too much of any one thing and nothing is counteracting another. One exception may be using the ascorbic if the beer is already on the lower end of the pH for the style, you'll end up with a tart beer.

    I'm also leaning towards your issue being hop creep. So far as the red apple flavor, that could be an ester derived from stressed yeast. What yeast are you using?
     
  14. butterygold

    butterygold Devotee (343) May 12, 2020 Spain

    The yeast was the first thing I looked at too see if there was a common thread.

    For drainpour number one - an IPA - it was Verdant - I noticed it took the krausen a long time to drop and maybe I bottled too soon. No gravity readings were taken. It sucked, as I had heard a lot of great things about this yeast.

    The second drainpour - a hoppy pale ale - was Safale US-05. I took gravity readings, but I had a trip and maybe bottled too soon - they were the same readings but only about 24 hours apart.

    I have been reading that this off flavor can be produced by both oxidation and yeast issues.

    Thanks
     
  15. MrOH

    MrOH Grand Pooh-Bah (3,995) Jul 5, 2010 Virginia
    BA4LYFE Society Pooh-Bah

    That has also been my experience with Verdant. Not a drainpour, but not my favorite, either.
     
  16. Beer_Life

    Beer_Life Initiate (0) Dec 5, 2020 New York

    I don't have a theory that explains all your observations. But I want to drill down a little on your bottle preparation. When you run them through the dishwasher, do you use detergent? If so, I would stop. Even a small amount of detergent residue could cause problems for your beer. (Because bottles have narrow mouths, they won't rinse as well as your dishes.)

    And actually, if your dishwasher has a sanitize cycle, you can use that and skip the StarSan. You just need to make sure the bottles don't get contaminated in between the wash and bottling day, but that really shouldn't be too tough. If you have a drying rack or bottle tree or whatever, that would work, or you could just put them somewhere they won't get dust in them.

    Again, I don't think this addresses all your issues, but it may help.
     
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  17. wasatchback

    wasatchback Pooh-Bah (1,574) Jan 12, 2014 Tajikistan
    Pooh-Bah Trader

    You’re most likely dealing with hop creep. You’re seeing additional gravity drop in the bottle which leads to over-carbonation and gushing.

    How long are you leaving the bottles out warm?

    Do you know what diacetyl smells/feels/tastes like? It often accompanies hop creep but it can dissipate.

    An easy way to see if it’s additional attenuation is degas whatever’s left in the bottle (pour it through a coffee filter to degas it) and measure the final gravity. Ideally use a finishing hydrometer to be more accurate.

    What size are your batches again? 1oz/gallon is minimum DH amount for an IPA if you want any aromatics.

    Cerain varieties are more conducive to hop creep than others but there are other variables at play. Amarillo and Centennial can be major offenders. Citra however doesn’t tend to be as bad. Mosaic and El Dorado can be pretty bad as well.

    Only way to prevent hop creep is to remove as much yeast as possible before adding hops and dry hopping colder (50-58) which prevents refermentation. However this is pretty much impossible with your setup.

    Verdant is the best dry yeast for making modern IPAs. It’s generally pretty quick but yes krausen can say around forever. If you’re careful you can harvest a bunch of yeast for yourself next batch by top cropping it on day 2 or 3. Just gotta make sure your sanitation steps are very sound. This will also help the krausen drop a bit faster as there just wont be as much yeast left. With good dry yeast and gravities sub 1.064 you should see fermentation complete in 5-6 days, especially with Verdant.

    I’d dry hop at the tail end of fermentation and leave for 7-9 days before bottling.

    It’s really hard to make good modern IPA in buckets and with bottles. Hops are the first thing to go when exposed to even minute amounts of o2.
     
  18. butterygold

    butterygold Devotee (343) May 12, 2020 Spain

    Makes total sense, I will stop washing them in the dishwasher with detergent. I had read that somewhere but had totally forgotten about it.

    Thanks
     
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  19. butterygold

    butterygold Devotee (343) May 12, 2020 Spain

    Thanks for the detailed reply,

    I generally do 5 gallon batches. I started out dry hopping 1 - 2 ounces per batch, but recently have done more like 3 -4.

    The bottles usually sit in the basement until I make room in the fridge for a few more - a month? The basement is at a pretty steady 68 - 70 degrees in summer.

    I don't know a lot about diacetyl, but will read up on it.
    It's interesting that Amarillo and Centennial are bad for hop creep, as those are indeed the two that have potentially given me problems. I will check for other varieties, as I have some Simcoe in the fridge that I could chuck in with the Citra for this next batch.
     
  20. JackHorzempa

    JackHorzempa Grand Pooh-Bah (3,375) Dec 15, 2005 Pennsylvania
    Society Pooh-Bah

    #20 JackHorzempa, Aug 24, 2021
    Last edited: Aug 24, 2021
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