Infection?

[zlandaal]

So this picture is after two months in the primary. It tastes good, and didn't have any off smells, so I went ahead and kegged it. It's a chocolate milk stout.

Did it get infected?

I used cocoa powder and lactose in the boil, so I think that could be a source...

Either way, I might just have more gear for my sour brewing if it is 😆

 

[BrewSomeMore]

Looks like yeast rafts. You're OK.

 

[passedpawn]

Normally, large bubbles on the top that last well beyond the initial fermentation would be a red flag. However, that cocoa powder probably left some oil on the surface that is causing the large bubbles to form. So, I'm gonna go with not infected.

 

[RM-MN]

It's pretty hard to get an infection in the primary. The conditions in the primary just don't favor an infection with the CO2 above the surface and the acidic beer that the yeast cause. I think your bubbles are simply holding some of the chocolate to the surface.