US 05 starter at high krausen

[Rob2010SS]

Hey everyone. Trying one more attempt at fixing a stalled fermentation.

Made a1L starter tonight that i want to pitch at high krausen. It's on a stir plate at 70 degrees. Anyone know about how long i should let it wait to get to high krausen? I've read anywhere from 4-6 hours up to 12 hours on different yeasts. Wondering what other ppls experience with us05 is.

What are signs of high krausen, just a frothy top on the starter?

 

[flars]

You most likely see the krausen if you're using a stir plate. Take it off the stir plate and swirl it periodically. If a krausen rises when it is swirled it is ready to pitch. It will probably be ready to pitch when you swirl it in the morning.

 

[Rob2010SS]

Thanks flars. Second part of the question...

My RIS is stalled at 1.050. Is a 1L starter enough or should i go bigger? The beer I'm pitching this into is 4.5 gallons so i don't know if i should go bigger as that may affect the flavor of my beer but figured I'd ask

 

[flars]

Thanks flars. Second part of the question...

My RIS is stalled at 1.050. Is a 1L starter enough or should i go bigger? The beer I'm pitching this into is 4.5 gallons so i don't know if i should go bigger as that may affect the flavor of my beer but figured I'd ask

You can try the US-05 to see what it might be able to do. A high gravity RIS that stopped fermenting not due to ingredients or high mash temperature might need a high gravity ale yeast like WLP099, or a different high gravity strain, to finish the fermentation.

 

[Rob2010SS]

Awesome. Thanks. Appreciate the help. I tried pitching 2 packs of rehydrated us05 with yeast nutrient and it only brought it down 10 points - 1.060 to 1.050. I'll try this and see how it goes