Why Does My Beer Taste Like Butter? Beer Off Flavours

Have you ever cracked open a bottle of beer and found that it tasted like butter? In this video, we go over the common beer off flavours: buttery, green apple, salty, yeasty, and rotten eggs. #diacetyl #burton-on-trent #beertalk
Diacetyl is the compound in microwavable popcorn which gives it the "butter" flavour and mouthfeel. While diacetyl is naturally produced during fermentation, it is also taken up by the yeast during the course of fermentation. An incomplete fermentation or bacterial infection by lactic acid bacteria can both cause high levels of diacetyl in finished beers.
Beer that tastes like rotten eggs is caused by sulphur production during fermentation. This off-flavour is usually found in lager beers. Green apple or nail polish flavours are caused by acetaldehyde production during fermentation. Salty beer is caused by adding too many brewing salts, and yeasty beer is caused by beer that has been left to sit on the yeast cake too long.
Let's take a closer look into some more common off flavors in beer! #beertalk #beerflavour #drinking
I'm Miss Brewbird, a Canadian distiller. I'm tickled pink that you've found your way here. If you are interested in learning more about the drinks industry then this is the channel for you. Hit that subscribe button for more videos about distilling and brewing. Cheers!
Video edited by: Fabio Campos ([e-mail])
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[@MrMarkmeadowland]

As informative and fun as ever. Thanks!

[@scottclay4253]

Very informative and you always manage to keep it lively and fun!
Congratulations on 300,000 views!
Thanks Brewbird.

[@ledzep331]

Calcium carbonate lowers the acidity, it acts as a "buffer". It is very useful if you're wort is starting at low PH as this will drop further when the yeast get to work. I use it regularly in wine making as you're dealing with lower PH (more acidic) must. The reason I use calcium carbonate is because it doesn't add a salty taste to the end product (in fact it helps to prevent the yeast from producing "off" flavours, of which some could be the ones you've mentioned, by buffering the PH level.).

[@scottclay4253]

I noticed you have passed a third of a million total views! Congratulations, that is a lot of interest. Creeping up on 7k subscribers too.
I have been missing your input, Brewbird. I hope all is well, I keep wishing the best for you.

[@footrotdog]

The egg came before the chicken. The first animal to lay a chicken egg wasn't quite a chicken.

[@davidhowick3665]

The chicken and egg…came together! You could call it a draw