tag:blogger.com,1999:blog-8066877917844499643.post1753671475249874025..comments2024-02-23T15:34:32.816-05:00Comments on The Mad Fermentationist - Homebrewing Blog: Priming Barrel-Aged and Blended Sour BeersThe Mad Fermentationist (Mike)http://www.blogger.com/profile/07379932734747507258noreply@blogger.comBlogger16125tag:blogger.com,1999:blog-8066877917844499643.post-18581782441605308692018-12-18T06:54:41.345-05:002018-12-18T06:54:41.345-05:00I haven;t found that to be the case. I believe the...I haven;t found that to be the case. I believe the reduction in dissolved CO2 is a result of the rough interior surface of the barrel. Plastic and glass are much smoother. The Mad Fermentationist (Mike)https://www.blogger.com/profile/07379932734747507258noreply@blogger.comtag:blogger.com,1999:blog-8066877917844499643.post-55779211391064222732018-12-17T07:31:43.818-05:002018-12-17T07:31:43.818-05:00Hei Mike
First of all thanks a lot for the inspira...Hei Mike<br />First of all thanks a lot for the inspiration and information you provide with your blog. <br />I have a question concerning the barrel aging reduction of CO2 in spreadsheet.<br />Do you think long time ageing (15 months) in a plastic fermentor (Speidel) will also provid some nucleation sites and is porous enough to reduce the rediusual CO2?<br />Cheers Alex<br />Alex Wengernoreply@blogger.comtag:blogger.com,1999:blog-8066877917844499643.post-69275800691503731232015-10-08T20:33:13.646-04:002015-10-08T20:33:13.646-04:00SOrry for not replying previously, but you got it....SOrry for not replying previously, but you got it. The combination of nucleation and lower head pressure (thanks to gas exchange through the wood) likely combine to reduce the amount of carbonation in solution. It'll depend though, if you package while the Brett is still slowly working then there may be a more standard amount of CO2.The Mad Fermentationist (Mike)https://www.blogger.com/profile/07379932734747507258noreply@blogger.comtag:blogger.com,1999:blog-8066877917844499643.post-10909181760053467252015-10-08T13:55:14.006-04:002015-10-08T13:55:14.006-04:00I get now. I tried my first barrel ageing and real...I get now. I tried my first barrel ageing and realized that the barrel is providing nucleation sites thus causing the CO2 to come out of solution.Mark Trenthttps://www.blogger.com/profile/05088603521030386086noreply@blogger.comtag:blogger.com,1999:blog-8066877917844499643.post-54766237964019514682015-08-06T11:39:14.377-04:002015-08-06T11:39:14.377-04:00Hey Mike, Your observation of CO2 reduction in bar...Hey Mike, Your observation of CO2 reduction in barrel aged beers seem counterintuitive to me. Although at times, my brain is not very intuitive. Assuming that the beer is barrel aged at a temperature lower than fermentation temperature, it would seem that over time the beer would actually pick up more CO2 or whatever gas was available to it. While I have yet to barrel age a beer, I am trying to learn as much as possible before making such a long term commitment. I do brew a lot of Brett secondaried beers and part of my process includes an extended cold crash (~3 weeks) to reduce the Brettanomyces population to very low numbers (I believe a low population of Brett in the bottle does wonderful things). Knowing that cold beer holds more gas that warm beer and worrying that the beer would take on oxygen during the long cold period, I attach a nitrile glove to the neck of the carboy and inflate with CO2. During the first 72 hours of the crash, the glove has to be re-inflated 2 or 3 times, indicating the the beer is taking on CO2. The first time I did this, I allowed the beer to come back to 60F for bottling as I like to pitch Sacc at bottling. As the temperature increased the glove re-inflated and much of the dropped yeast went back into suspension, indicating the CO2 gassing off. Since then I transfer to a CO2 purged and sealed bottling vessel prior to warming. Sorry for the long statement but it is this experience that has me wondering why a barrel aged beer would decrease in CO? Mark Trenthttps://www.blogger.com/profile/05088603521030386086noreply@blogger.comtag:blogger.com,1999:blog-8066877917844499643.post-62285206114855058682015-06-01T20:22:06.821-04:002015-06-01T20:22:06.821-04:00Use a carbonation calculator, with the relevant va...Use a carbonation calculator, with the relevant variables entered. The Mad Fermentationist (Mike)https://www.blogger.com/profile/07379932734747507258noreply@blogger.comtag:blogger.com,1999:blog-8066877917844499643.post-3994331470710702982015-05-29T12:23:14.998-04:002015-05-29T12:23:14.998-04:00This comment has been removed by the author.Anonymoushttps://www.blogger.com/profile/09947478587276830012noreply@blogger.comtag:blogger.com,1999:blog-8066877917844499643.post-22653945334632416762015-05-28T19:29:42.147-04:002015-05-28T19:29:42.147-04:00Why not bulk prime with a sugar solution? Adding d...Why not bulk prime with a sugar solution? Adding dry sugar can cause the beer to foam and lose some of its residual carbonation. Do you have a scale accurate enough to measure tenths of a gram (or at least grams)?<br /><br />Have you had stable gravity readings month-over-month? Even a beer at 1.005 could drop enough to cause over-carbonation if it isn't finished. <br /><br />There's no way to estimate how much sugar to add without knowing how much carbonation you want the beer to have. Same goes for how long it'll take, without knowing anything else about the beer.The Mad Fermentationist (Mike)https://www.blogger.com/profile/07379932734747507258noreply@blogger.comtag:blogger.com,1999:blog-8066877917844499643.post-84822202915371753722015-05-28T18:44:19.127-04:002015-05-28T18:44:19.127-04:00This comment has been removed by the author.Anonymoushttps://www.blogger.com/profile/09947478587276830012noreply@blogger.comtag:blogger.com,1999:blog-8066877917844499643.post-19362547664804353142014-07-17T17:33:28.343-04:002014-07-17T17:33:28.343-04:00Thanks Greg, one of the great things about writing...Thanks Greg, one of the great things about writing this blog is how much I get to learn!<br /><br />Best of luck with things at Council Brewing Jeff! If you have any suggestions or improvements, let me know!<br /><br />Jonathan, I don't have any more specifics on Jolly Pumpkin's kegging process. They may keg completely flat beer with priming sugar, or they may partially force carbonate and then lightly prime. Either way likely the beer spends at least a little time in a brite or blending tank.<br />The Mad Fermentationist (Mike)https://www.blogger.com/profile/07379932734747507258noreply@blogger.comtag:blogger.com,1999:blog-8066877917844499643.post-81359695333164600332014-07-17T15:46:27.268-04:002014-07-17T15:46:27.268-04:00Mike, this is somewhat related but in your book (p...Mike, this is somewhat related but in your book (p. 97) you mention Jolly Pumpkin keg conditions their beer. Does this mean their beers do not see brite tanks? Do they keg primed, uncarbonated beer and allow a few weeks at warm temps to carbonate?<br />Some further insight would be awesome, cheers!Anonymoushttps://www.blogger.com/profile/09815120389995461694noreply@blogger.comtag:blogger.com,1999:blog-8066877917844499643.post-12123758106440484062014-07-17T15:00:36.880-04:002014-07-17T15:00:36.880-04:00Thanks Mike, we are just about to blend and bottle...Thanks Mike, we are just about to blend and bottle our first commercial release. I was putting off creating my own spreadsheet, you have great timing.<br /><br />ThanksJeffrey Cranehttps://www.blogger.com/profile/01520169652639837640noreply@blogger.comtag:blogger.com,1999:blog-8066877917844499643.post-81289410464174214022014-07-16T12:21:13.502-04:002014-07-16T12:21:13.502-04:00Sorry, I left out one little bit. You want to &quo...Sorry, I left out one little bit. You want to "Set Objective" to "Value of" whatever you desired volumes of CO2 would be.Greg Mullenhttps://www.blogger.com/profile/06173099284255361210noreply@blogger.comtag:blogger.com,1999:blog-8066877917844499643.post-80713625475855305072014-07-16T12:18:05.310-04:002014-07-16T12:18:05.310-04:00You can use the solver in Excel to figure out what...You can use the solver in Excel to figure out what blend ratio to use to arrive at a specific value for Anticipated CO2 - Without Sugar. Say you plan to blend together one new lambic with one old lambic. You would set the parameters of each in slots 1 and 2 of the spreadsheet, set the volume you plan to use for one of them, then use the solver to give you the volume you need of the other one to get the desired volumes of CO2. To do this you open the solver, use cell H11 in the "Set Objective" field, use cell B2 or C2 in the "By Changing Variable Cells" field (depending on which volume is your unknown), then click solve and it should find you your answer. Hope this helps!Greg Mullenhttps://www.blogger.com/profile/06173099284255361210noreply@blogger.comtag:blogger.com,1999:blog-8066877917844499643.post-63799330064279677812014-07-16T06:21:03.970-04:002014-07-16T06:21:03.970-04:00It won't do that calculation automatically, bu...It won't do that calculation automatically, but you could certainly just play with the amounts of the old and young beer until the number in "anticipated CO2 - without sugar" matched your target. Best of luck!The Mad Fermentationist (Mike)https://www.blogger.com/profile/07379932734747507258noreply@blogger.comtag:blogger.com,1999:blog-8066877917844499643.post-23612459662378623232014-07-15T21:17:46.435-04:002014-07-15T21:17:46.435-04:00Is it possible to use your spreadsheet in the reve...Is it possible to use your spreadsheet in the reverse. If I know what level CO2 I would like to have in the final blend could it tell me the ratio of new to old lambic I would need to blend?Anonymoushttps://www.blogger.com/profile/00442781904626866956noreply@blogger.com