WLP570 Belgian Golden Ale Yeast - Low Krausen and activity??

[jneighbors]

Purchased WLP570 from White Labs (San Diego) 2 days ago with use by 7/28/25. Made a 1,770 ml starter with a few grams of Fermaid K, then cooled to 69, oxygenated the headspace twice, and shook Erlenmeyer 60 seconds each. Kept in cool garage around the 69-degree F mark. Probably a 1.022 gravity. All ok up till now. Accidentally left one of those orange caps with 2 different inputs overnight rather than covering it with foil. 14 hours later, the krausen was only 1/2". I have done over 50 starters with WLP01 and usually have to clean up a yeast mess in the morning over everything. Sooooo, is this yeast not produce much activity? I guess I could take a gravity reading tomorrow to see the attenuation. Thanks for input from those who know this yeast.

 

[dmtaylor]

WLP570 should make an enormous krausen. Sounds like you did everything right. Hope you didn't get cooked yeast. Maybe you looked away for a second too long and it is down to like 1.004 already or whatever. Take a gravity reading and find out.

Welcome to the forum.

 

[VTMongoose]

I've had more than one White Labs packet either towards the end of its expiry period or just slightly out of date totally fail to take off recently in starters. Liquid yeast frankly you need to use it fresh or not at all is what I have experienced time and time again.

WB-06 is the same as WLP570 for future reference.