An undesired flavor in the final beer. The flavor may be undesirable in any style, such as soapiness, harsh astringency, or may be out of place in the style being brewed, such as fruitiness or diacetyl in a lager.

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3
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202 views

Does skunk off flavour go away?

Skunky off-flavours are caused by ultraviolet light causing chemical reaction that transforms alpha-acids. Once this flavour is created, does it go away with time, and if so how much time? Or will it ...
5
votes
3answers
1k views

Why does my beer taste like bacon?

I recently brewed an oatmeal stout that has distinct bacon notes to it, both in the nose and in the flavor. What could be causing these flavors? This bacon-ness isn't disagreeable; it's actually ...
5
votes
1answer
2k views

What is the white film on my beer in my bottles?

I brewed a double batch of IPA with a buddy about 8 weeks ago. We split this into two 5 gallon pails and 2 weeks later into two carboys. His was fine, but mine developed a bit of white stuff on ...
2
votes
2answers
727 views

Yeast/Green Apple Taste

I have homebrewed with family many times and never had problems, nor did I with my first batch on my own. The last couple, however, have had a yeasty/cidery/apple odor. Very strong. I doubt it is ...
2
votes
2answers
814 views

Combating Diacetyl

I've just finished my first brew (brown ale), and the results aren't quite as spectacular as I had hoped. The issue is a prominent, yet not overpowering, sweet almost caramel-like flavor. As best I ...
2
votes
3answers
325 views

Which malts have the highest SMM (precurser of DMS) content?

I've been scouring the internet, trying to find some kind of list of the SMM content in various malts so I know when it would be wise to do a 90 minute boil. I can't find anything, just the definition ...