Why Does Stuck Fermentation Occur And How Do You Fix It?

 

A "stuck fermentation" is when yeast goes dormant before full attenuation is completed. This can happen for a few reasons, which we will explore in this blog. We will also explore potential remedies for a stuck fermentation.

There are a few primary reasons why fermentation temperatures might be too high:

1. The wort is deficient in nitrogen.

2. The wort is deficient in oxygen.

3. The wort is deficient in nutrients.

4. The yeast strain is genetically predisposed to high alcohol tolerance.

5. The yeast strain is genetically predisposed to stress from an uninhabitable environment.

Potential remedies for a stuck fermentation: 

-Rouse the yeast: 

Sometimes all you need to do to get a batch out of a stall is to stir up the yeast in your fermenter. This can be done by simply giving the fermenter a few bumps, gently swirling it, or by using a sanitized spoon to give the trub (yeast, proteins, and hop particles) a gentle stir.

-Warm up the fermenter:

If you suspect that your fermentation is stuck because of low fermentation temperatures, try bringing the fermenter to a warmer location.

-Re-pitch new yeast: 

This is usually the best way to fix a stuck fermentation according to many experts. You can add more of your original yeast or you can add a new strain of yeast.

Introduce simple sugars or pureed fruit

Yeast sometimes just runs out of energy; adding in a new source of sugar can sometimes help kick-start fermentation again. 

Add yeast nutrients

You can also add yeast nutrients to help return the nutrients that the yeast has depleted.

Add enzymes via Beano

Another option is to add enzymes via Beano. The enzymes it provides can often move your gravity several points, which is why it's a popular method among brewers.

Add oxygen

Some strains of yeast, like Nottingham, have larger than normal oxygen requirements; one way to provide them with oxygen is by using air stones or by agitated the top of the wort with asanitized whisk.

 If your fermentation has stalled, one option you have is to try and re-stimulate the yeast. However, depending on how far along the fermentation process is, this may not be possible. If re-pitching your yeast is not an option, then you can try using one of these other techniques. 

another thing to be aware of is that your beer might not be stalled at all, but actually “done” fermenting. It's possible for a beer to finish fermentation faster than expected. In this case, it would be a good idea to use a hydrometer to check the beer's actual gravity.

 If you're still having trouble, please don't hesitate to reach out to me at customer service. We'll work through the issue together.

Thank you for your time!

Further details:

Call Us: 08047179554

Whatsapp: +91 7204059072

E-Mail: info@sbrewingcompany.com / sales@sbrewingcompany.com

Website: https://www.sbrewingcompany.com/

Address: S Brewing Company, #480, 2nd Floor, 2nd Main,2nd Stage, Near Indiranagar BDA Complex,Bangalore – 560038, India