Anybody seen this post fermentation infection?

[Extralike]

Hey,
Tried to brew a stout, after 3 weeks opened the bucket to find this. Anybody knows if the beer's ruined? Should I toss it?

 

[watermelon83]

See the first post here:

https://www.homebrewtalk.com/f39/post-your-infection-71400/

 

[flars]

No don't dump it. Take a sample to see how it tastes. Perhaps siphon a sample with a throw away tube to prevent cross contamination in later brews.

 

[unionrdr]

Looks like the typical start of a lacto infection.