Condensation dropping demijohn neck crud into fermenter

Hi Guys,
I was just looking for your thoughts please on the following issue I noticed. I use of Brewbelt covered in an old duvet. I have a thermostat attached to it so the brew doesn't get above 22c. It is winter here and the room temperature is about 17c on average. I just noticed this recently so I'm guessing it's the drop in temperature.

My question is (Hopefully you can make it out in the photo), the dried on crud that the condensation has knocked off the neck and now floats on the surface...Will this change the taste of the brew significantly? I'm new to brewing and am trying different beers all the time so I don't have something brewed earlier to compare with. This one is an oatmeal stout.

Thanks in advance

I don't think you have anything to worry about. If it worries you?  You can siphon into a secondary to let it clear better. The taste will be fine. (I hope)?

the crud you are concerned about is made up of the same stuff that is in you beer.
It's just dried out.

ok, that's fair enough, I read somewhere (I'll try to track it down) that when bottling straight from the Demijohn, be careful not to disturb this crust as it can cause off flavours..Might have been someone been overly pernickety.

I bottled the Beer tonight and it tasted fine, As I dipped the siphon in, it was as if it had to break through a LAYER of oil. Weird.

magnethead said:

ok, that's fair enough, I read somewhere (I'll try to track it down) that when bottling straight from the Demijohn, be careful not to disturb this crust as it can cause off flavours..Might have been someone been overly pernickety.

I bottled the Beer tonight and it tasted fine, As I dipped the siphon in, it was as if it had to break through a LAYER of oil. Weird.

Click to expand...

My stouts look like they have an oil slick on them.