# Back of the Tongue Bitterness **URL:** \ **Category:** General Homebrew Discussion\ **Created:** [April 10, 2011, 6:12pm UTC](https://forum.homebrewersassociation.org/t/back-of-the-tongue-bitterness/5855 "2011-04-10T18:12:26Z")\ **Posts on this page:** 14\ **Page:** 1
**Author:** ![skyler](https://sea1.discourse-cdn.com/brewersassociation/user_avatar/forum.homebrewersassociation.org/skyler/32/20702_2.png) [@skyler](https://forum.homebrewersassociation.org/u/skyler)\ **Post date:** [April 10, 2011, 6:12pm UTC](https://forum.homebrewersassociation.org/t/back-of-the-tongue-bitterness/5855/1 "2011-04-10T18:12:26Z")
I just kegged an amber ale last night and noticed an unusual problem - there is a sharp bitterness in the aftertaste and at the back of the tongue. I am wondering what it is and what I should do. The bitterness is a little like a hoppy beer with way too much suspended yeast - sharp like that. Otherwise the beer is perfect - crystal clear, wonderful aroma, excellent head retention. My process for this beer: I brewed it per usual - batch sparge with a fairly fine crush and about 84% efficiency (recipe below). After 3 weeks in primary, I cold crashed and racked onto dry hops. I gave it 12 days and then cold crashed and hit it with gelatin. Then I wasn’t able to get to it for 5 days before racking. The gelatin worked - beer is incredibly clear, but I am wondering if the cold temp with the dry hops could have done it. Recipe: Education Amber Ale Style: 10B-American Ale-American Amber Ale Recipe Overview Wort Volume Before Boil: 14.50 US gals Wort Volume After Boil: 12.00 US gals Volume Transferred: 10.00 US gals Water Added: 1.00 US gals Volume At Pitching: 11.00 US gals Final Batch Volume: 10.50 US gals Expected Pre-Boil Gravity: 1.049 SG Expected OG: 1.054 SG Expected FG: 1.011 SG Expected ABV: 5.7 % Expected ABW: 4.5 % Expected IBU (using Tinseth): 37.6 Expected Color: 11.5 SRM Apparent Attenuation: 79.4 % Mash Efficiency: 84.0 % Boil Duration: 90.0 mins Fermentation Temperature: 58 degF Fermentables Canadian Pale Ale Malt 12lb 0oz (51.9 %) In Mash/Steeped UK Pale Ale Malt (Maris Otter) 5lb 0oz (21.6 %) In Mash/Steeped German Munich Malt 4lb 0oz (17.3 %) In Mash/Steeped UK Medium Crystal (120EBC) 2lb 0oz (8.6 %) In Mash/Steeped German Carafa Special II 2.00 oz (0.5 %) In Mash/Steeped Hops US Magnum (17.0 % alpha) 14 g Loose Whole Hops used 60 Min From End US Simcoe (11.0 % alpha) 58 g Bagged Pellet Hops used 15 Min From End US Centennial (11.0 % alpha) 113 g Loose Whole Hops used 5 Min From End US Centennial (11.0 % alpha) 113 g Loose Whole Hops used At turn off US Centennial (9.0 % alpha) 85 g Loose Pellet Hops used Dry-Hopped Yeast: White Labs WLP001-California Ale Mash at 152 degF for 60 mins ---
**Author:** ![skyler](https://sea1.discourse-cdn.com/brewersassociation/user_avatar/forum.homebrewersassociation.org/skyler/32/20702_2.png) [@skyler](https://forum.homebrewersassociation.org/u/skyler)\ **Post date:** [April 10, 2011, 6:17pm UTC](https://forum.homebrewersassociation.org/t/back-of-the-tongue-bitterness/5855/2 "2011-04-10T18:17:01Z")
Only thing I am thinking is that I could add polyclar or more gelatin, but I am not sure either of those would really fix my problem. ---
**Author:** ![denny](https://sea1.discourse-cdn.com/brewersassociation/user_avatar/forum.homebrewersassociation.org/denny/32/13092_2.png) [@denny](https://forum.homebrewersassociation.org/u/denny)\ **Post date:** [April 10, 2011, 6:32pm UTC](https://forum.homebrewersassociation.org/t/back-of-the-tongue-bitterness/5855/3 "2011-04-10T18:32:19Z")
Sometimes that perception comes from chlorophenols.  Any chance there was chlorine involved? ---
**Author:** ![skyler](https://sea1.discourse-cdn.com/brewersassociation/user_avatar/forum.homebrewersassociation.org/skyler/32/20702_2.png) [@skyler](https://forum.homebrewersassociation.org/u/skyler)\ **Post date:** [April 10, 2011, 6:38pm UTC](https://forum.homebrewersassociation.org/t/back-of-the-tongue-bitterness/5855/4 "2011-04-10T18:38:28Z")
all the water was carbon-filtered, per usual, so I doubt there would be any chlorine. ---
**Author:** ![mabrungard](https://sea1.discourse-cdn.com/brewersassociation/user_avatar/forum.homebrewersassociation.org/mabrungard/32/12430_2.png) [@mabrungard](https://forum.homebrewersassociation.org/u/mabrungard)\ **Post date:** [April 10, 2011, 10:05pm UTC](https://forum.homebrewersassociation.org/t/back-of-the-tongue-bitterness/5855/5 "2011-04-10T22:05:42Z")
Your efficiency is quite high.  There could always be the possibility that the beer was oversparged.  I assume you haven’t noticed this with your other beers? I’m more inclined to believe that the bitterness perception is from polyphenols from the dry hopping. ---
**Author:** ![majorvices](https://sea1.discourse-cdn.com/brewersassociation/user_avatar/forum.homebrewersassociation.org/majorvices/32/12825_2.png) [@majorvices](https://forum.homebrewersassociation.org/u/majorvices)\ **Post date:** [April 10, 2011, 11:20pm UTC](https://forum.homebrewersassociation.org/t/back-of-the-tongue-bitterness/5855/6 "2011-04-10T23:20:22Z")
Two things come to my mind. 1) Over Carbonation. An overcabronated beer enhances bitterness and makes a sharp bitterness bite. 2) The mineral content of your water. If you water changed suddenly, and you are used to putting, say, 10 gms of Calcium Sulfate into your mash, that can mess your bitterness us big time depending on what has changed in your water. My water changes constantly, which makes like some what difficult. ---
**Author:** ![pyrite](https://avatars.discourse-cdn.com/v4/letter/p/c68b51/32.png) [@pyrite](https://forum.homebrewersassociation.org/u/pyrite)\ **Post date:** [April 10, 2011, 11:32pm UTC](https://forum.homebrewersassociation.org/t/back-of-the-tongue-bitterness/5855/7 "2011-04-10T23:32:53Z")
Like major said, I think it’s likely a carbonic bite that is causing the perception of bitterness.  Also the combination of a low final gravity with carafa special II dark malt might enhance the bitterness. Too much calcium carbonate might also give that sharp back of the tongue astringent bitterness. ---
**Author:** ![konrow](https://sea1.discourse-cdn.com/brewersassociation/user_avatar/forum.homebrewersassociation.org/konrow/32/9757_2.png) [@konrow](https://forum.homebrewersassociation.org/u/konrow)\ **Post date:** [April 11, 2011, 12:16am UTC](https://forum.homebrewersassociation.org/t/back-of-the-tongue-bitterness/5855/8 "2011-04-11T00:16:15Z")
I had some Columbus that caused hop astringency to a couple of batches. The first one I only used .25 oz of it to dry hop. The beer did get better with age (scored 35 in a recent comp.) The other one was a APA and that I only dry hopped half of. One half is still not drinkable. The other is gone. I tossed the rest of those hops in the trash. ---
**Author:** ![skyler](https://sea1.discourse-cdn.com/brewersassociation/user_avatar/forum.homebrewersassociation.org/skyler/32/20702_2.png) [@skyler](https://forum.homebrewersassociation.org/u/skyler)\ **Post date:** [April 11, 2011, 12:45am UTC](https://forum.homebrewersassociation.org/t/back-of-the-tongue-bitterness/5855/9 "2011-04-11T00:45:43Z")
Well, the water here is fairly high in bicarbonate. I added no salts to this mash or boil, but I did use some 5.2. I haven’t had this problem before and have made similar-colored beers. I often add a lot of gypsum to my mash in order to effect a “Burton” profile (rather than carrying 20 gallons or RO water upstairs to my apartment). I use my water unmodified for darker beers all the time. My city water report is: Calcium      33 Bicarbonate 336 Magnesium  59 Sodium        79 Chloride      52 Sulfate        81 ---
**Author:** ![pawtucket\_patriot](https://sea1.discourse-cdn.com/brewersassociation/user_avatar/forum.homebrewersassociation.org/pawtucket_patriot/32/8024_2.png) [@pawtucket\_patriot](https://forum.homebrewersassociation.org/u/pawtucket_patriot)\ **Post date:** [April 11, 2011, 12:54am UTC](https://forum.homebrewersassociation.org/t/back-of-the-tongue-bitterness/5855/10 "2011-04-11T00:54:43Z")
The bicarbonate content is fairly high, but I might be most concerned with the magnesium level with regard to that profile. It’s really high. I know a higher than desirable amount of magnesium can lead to unwanted flavors, but I can’t remember if it’s a harsh bitterness or something else. ---
**Author:** ![skyler](https://sea1.discourse-cdn.com/brewersassociation/user_avatar/forum.homebrewersassociation.org/skyler/32/20702_2.png) [@skyler](https://forum.homebrewersassociation.org/u/skyler)\ **Post date:** [April 11, 2011, 1:07am UTC](https://forum.homebrewersassociation.org/t/back-of-the-tongue-bitterness/5855/11 "2011-04-11T01:07:17Z")
Regardless, I have brewed many beers with this water and haven’t had this problem. However, having just had another taste, I can say two things: one, the beer (which I shake-carbonated yesterday) is taking longer than usual to be properly pourable (still all foamy) and two, the sharp bitterness has GREATLY reduced in the last 18 hours. That leaves me to believe that the problem has something to do with the keg (which a buddy cleaned and sanitized for me) or the lines (which I just ran warm starsan through before tapping this keg). Either way, if the problem is going away, I am happy. I am also happy that I will be moving to Oakland or Berkeley in July where the water is soft and easy to brew with. ---
**Author:** ![system](https://us1.discourse-cdn.com/brewersassociation/original/1X/f1a2211dcb353b921ed70873794a31db2031eccc.png) [@system](https://forum.homebrewersassociation.org/u/system)\ **Post date:** [April 11, 2011, 2:26am UTC](https://forum.homebrewersassociation.org/t/back-of-the-tongue-bitterness/5855/12 "2011-04-11T02:26:45Z")
Do you batch or fly sparge? If you fly sparge do you acidify the sparge water to 6pH or below? I’m thinking you may have extracted tannins from the husks. This would only apply if it is an astringent type bitterness like sucking on a used tea bag(opens this up for some jocularity  :o ) ---
**Author:** ![skyler](https://sea1.discourse-cdn.com/brewersassociation/user_avatar/forum.homebrewersassociation.org/skyler/32/20702_2.png) [@skyler](https://forum.homebrewersassociation.org/u/skyler)\ **Post date:** [April 11, 2011, 2:31am UTC](https://forum.homebrewersassociation.org/t/back-of-the-tongue-bitterness/5855/13 "2011-04-11T02:31:10Z")
> [@BeverageBob](#): > > Do you batch or fly sparge? If you fly sparge do you acidify the sparge water to 6pH or below? I’m thinking you may have extracted tannins from the husks. This would only apply if it is an astringent type bitterness like sucking on a used tea bag(opens this up for some jocularity  :o ) Batch sparge. ---
**Author:** ![system](https://us1.discourse-cdn.com/brewersassociation/original/1X/f1a2211dcb353b921ed70873794a31db2031eccc.png) [@system](https://forum.homebrewersassociation.org/u/system)\ **Post date:** [April 11, 2011, 2:32am UTC](https://forum.homebrewersassociation.org/t/back-of-the-tongue-bitterness/5855/14 "2011-04-11T02:32:47Z")
OK disregard my last post then.