Stuck fermentation

[pottsworth]

I seem to have got my first stuck fermentation.

I was aiming for a stone ipa clone, and hit 1.060 og, but totally forgot to chill my starter wort, and dumped yeast straight into a near boiling starter. I ditched that and chucked in a (with hindsight quite old) pack of us-05.

Fermentation never really got going, so after a few days I did a vitality starter of cml haze and chucked that in, but that didn’t really take off either.

I slowly ramped up to 23 degrees, but a refeactometer reading tonight still showed just under 1.030 (graph below is 10 points out as I need to recalibrate it).

Any suggestions before I just keg it, taste it, then probably dump the lot!?View media item 790

 

[RichardM]

Make another starter and add it now
or
Give it a good stir and wait and see what happens

 

[MyQul]

You try chucking in some amylase enzme to crank the gravity down

 

[pottsworth]

You try chucking in some amylase enzme to crank the gravity down

I’ve never used amylase before.

How much do you need and how long does it take?

Can you just chuck it straight into the fermenter?

 

[MyQul]

You need 1 tsp per 23L brew. I believe it takes about 1-2 weeks. I've never used it either. But I will be putting it in my latest brew to get the FG down to 1.000 (it currently stands at 1.007)

 

[terrym]

Try any one or more of these before you dump it
https://www.thehomebrewforum.co.uk/...s-for-dealing-with-stuck-fermentations.74910/

 

[Lawrence22]

I seem to have got my first stuck fermentation.

I was aiming for a stone ipa clone, and hit 1.060 og, but totally forgot to chill my starter wort, and dumped yeast straight into a near boiling starter. I ditched that and chucked in a (with hindsight quite old) pack of us-05.

Fermentation never really got going, so after a few days I did a vitality starter of cml haze and chucked that in, but that didn’t really take off either.

I slowly ramped up to 23 degrees, but a refeactometer reading tonight still showed just under 1.030 (graph below is 10 points out as I need to recalibrate it).

Any suggestions before I just keg it, taste it, then probably dump the lot!?View media item 790

Just a thought did you adjust your refractometer reading for alcohol content. A reading of 1.030 for a brew that started at 1.060 would suggest a true reading of 1.013.

 

[pottsworth]

Just a thought did you adjust your refractometer reading for alcohol content. A reading of 1.030 for a brew that started at 1.060 would suggest a true reading of 1.013.

No, no I did not.

Now you say it I can't believe I did that!

I'll keg it tomorrow and take a proper hydrometer reading. If it gets drunk it gets drunk.

 

[Llamaman]

Been there, done that!
Glad it’s not just me :)