berliner weisse smells like baby throwup

[johnsopi]

Made a Berliner weisse from extract. 6 pounds of wheat extract/5 gallon waters boiled. Yeast (Liquid) - Wyeast (Lactobacillus Buchneri) - 5335 Put in closet with heater room 80-90 for 5 days tasted in once a day till it was sour. Then let it cool to 78 and put a packet of 005 yeast . Let ferment( 18 days) as normal.Iit now has a little bit of a baby throw up smell. I kegged it any way tasts good but still smells a bit. What should I do next time to aviod this.

Thanks

 

[helibrewer]

Any oxygen that meets up with Lacto will produce butyric acid. You need to try to keep oxygen out of that fermentation.

 

[Calder]

Any oxygen that meets up with Lacto will produce butyric acid. You need to try to keep oxygen out of that fermentation.

Not sure you are correct there. Yes, keeping O2 out is good. If lacto produced butyric in the presence of 02, there could be lots of issues with yogurts.

Usually 'sick' notes are associated with clostridium. If he had used grains, I would have said that was the source, but since he used a culture, I'm confused.

 

[johnsopi]

Whats the best way to keep oxygen out after opening it to take a samlpe?

 

[Weezy]

Helibrewer is correct.

How to keep o2 out? Purge the headspace with co2. Drape the wort surface with plastic wrap. These are common tactics.

 

[johnsopi]

I'll that Just ordered stuff for next brew