Fermentation stuck

[Shimo]

I'm brewing a 2.1kg Better Brew Pilsner wort kit to which I added 1.5kg of LME. The yeast was a 10g pack that came with the wort kit.

It day 10 in the FV and the gravity has been stuck on 1.020 for the last 3 days.

Was brewing at 14/15C for the first week and it was bubbling away. Have tried rising the temp up to 20C but had no effect. Even gave it a little stirr to try wake the yeast.

Im 200 mile from the nearest HB store so just adding yeast involves expensive postage.

I was reading a post about racking onto another yeast cake to finish the process. The other brew is a brewfrew diablo, a strong ale. If I dont see changes in the next few days I would consider this.

Any help here would be great, as I've never had a fermentation stuck before

 

[Calder]

What was the OG? 1.056? Assuming all the ingredients were LME.

FG = 1.020 = 65% attenuation. You may be done, depending on the yeast used. Since it was pre-packaged kit, you will never know what it is. Basic Muntons, Coopers and Windsor are all low attenuators and 65% would not be unusual.

Did the kit recommend sugar, and you replaced it with LME?

I'd say that with a decent yeast you should be able to get down some more.

Using a cake is a practical suggestion. This beer will stay fine where it is for a while (weeks). If you feel leaving it for a long time after opening it is a worry, boil a couple of ounces of sugar in some water and add it to the fermenter; it will create CO2 in the airspace and protect the beer, and is small enough that it will not affect the taste of the beer. .... but leave the lid alone.

When a cake becomes available, try racking this one onto it.

 

[Shimo]

Cheer Calder, you are right about the O.G. was 1.052

Yeap makes perfect sense, there is a good bang of alcohol from samples taken to check the F.G and a quick calculation gives me a ABV % OF 4.8 which is what is stated on the info with the wort kit

I'll give it a few day at a cold temp to let it settle out a bit more and bottle up