Diacetyl... Oh... That is what it is

[arkowa]

Nearly sixty batches under my belt, ten lagers, and I've counted my lucky stars that I've never had a batch that I considered bad. I got a little lazy and decided "oh, I've never had diacetyl problems, I'm lazy, I'll do a D rest later". Never never came. Racked that light american lager to secondary, tasted, ugh! Canned corn. I tried to warm it up for a week, rouse the yeast...

Today was kegging day. I swear the gelatin finning only made the diacetyl taste even more in the forefront. Most beautiful beer I've ever made. Could not ask for a more beautiful light american lager! Dry, brilliant clarity..... Guess I have a beer for the moochers that complain about the bitter iipas and "heavy" brown ales.

"can o corn lager".

Just felt the need to rant upon sympathetic ears. SWMBO just doesn't understand the pain!

Ps, wyeast pilsen lager. diacetyl making little suckers

 

[Buckshot]

I think the corn taste is from DMS (diethyl). Diacytl typically smells/tastes like butter or butterscotch.

 

[Grumpybumpy]

I think the corn taste is from DMS (diethyl). Diacytl typically smells/tastes like butter or butterscotch.

Plus one

 

[paraordnance]

Yes, cooked corn is DMS, diacetyl tastes like butter, oily mounthfil. Once you try it you'll never forget

 

[arkowa]

Too sleepy, I ment butter popcorn... Not corn. Been doing a lot of pilsner based beers lately. Extra boils and all have put dms and corn on the mind. The light lager tastes buttery. I blame my distraught state of mind!

 

[spearko520]

a little off point, since this is more dicetyl, but has anyone had any experience or luck "scrubbing" DMS (or any other off flavors) from a finished beer by blowing CO2 down the liquid dip tube on a keg and venting out the relief valve?

 

[gr8shandini]

a little off point, since this is more dicetyl, but has anyone had any experience or luck "scrubbing" DMS (or any other off flavors) from a finished beer by blowing CO2 down the liquid dip tube on a keg and venting out the relief valve?

I haven't heard of this. I don't know if it would work or not, but one problem I can see with that method would be that you'd lose quite a bit of beer to foam (not to mention making a mess).

 

[ChickenArise]

It definitely came up on one of the Sunday Sessions on BN where someone (the collectively-owned brewpub maybe?) had a bad bad DMS grossness beer that he was able to continually purge the DMS out and replacing it with CO2.

 

[gr8shandini]

Thanks. I'll have to go check that one out. I've had a couple of beers that had slight DMS problems. Foamy mess aside, I guess it'd be worth a try if it could turn a bad beer into a good one.

 

[spearko520]

it doesn't foam out as long as your beer level is an inch or so below the lid. you work your pressure (if you jam a gas end onto the liquid port, it's not an airtite fit- or you can just hook your gas up to a liquid connect) and throttle the amount going in w a valve as you vent- i don't lose any beer out of the relief. I kind of thought it helped a couple of my problem beers clean up...

 

[Atonk]

Just felt the need to rant upon sympathetic ears. SWMBO just doesn't understand the pain!

This is completely understood - and I sympathize.