Munton's Traditional Ale LME kit stuck

[WillFrites]

Hey all,
I set off my kit three weeks ago to 21l, 750g spray malt and 250g sugar.
Fermentation has been stuck at 1020 for a few days now. I believe the OG was around 1035.

Any advice?

 

[Sandimas]

Can you remember how much yeast was in the packet?

Muntons kits were notorious for stalling at 1020, the so-called "stuck brew", because they only had 6g of yeast with the kits rather than then usual 11/12g required for 23L of beer. Some Muntons kits then has 11/12g packets but some kept with the smaller 6g ones.

Not a lot you can you - adding 250g of sugar and a stir might move it a few points, but the yeast has run out of steam.

 

[An Ankoù]

Hey all,
I set off my kit three weeks ago to 21l, 750g spray malt and 250g sugar.
Fermentation has been stuck at 1020 for a few days now. I believe the OG was around 1035.

Any advice?

If the yeast is, indeed, knackered, it will already have given the beer it's character so why not make up a starter from a more "hungry" yeast and pitch it in there. At the moment, you've got a sweet beer with 2% abv.
What yeasts have you got in your "stock cupboard"?