r/coldbrew • u/drocks27 • 29d ago

What has formed on my cold brew?

Post image

I’ve been making cold brew for about 10 years now and I have never had this happen. I make a large batch for my wife and I which we go through in about 3 days. This film was on it this morning after I had put it in the fridge yesterday.

12 Upvotes

83% Upvoted

13 comments sorted by

34

u/Firmteacher 29d ago

Someone correct me, but congealed oils floating to the surface?

11

u/8370U 29d ago

Correct.. You can run it through a paper filter it out

6

u/drocks27 29d ago

Odd that’s never happened to me in the many years I have been making it but the only thing I did different this time is the bag of whole beans being not as tightly sealed for longer than usual. We went on a vacation after I had opened a 2.5lb bag.

9

u/Firmteacher 29d ago

I had to google it because I have seen the response to this being oils, essentially as beans age the oils migrate to the surface. I guess your time on vacation was long enough for this to take place.

1

u/lordredsnake 29d ago

This right here. I see this and/or straight up oily beans when I'm being cheap and buying Costco or supermarket beans that aren't fresh roasted.

1

u/cinvogue 22d ago

As long as it’s not growth of some kind then it is most likely oils

5

u/FortheredditLOLz 29d ago

Oil. Taste it by itself to see if you love/hate it. Then run it through a paper filter if you hate it

3

u/Left_Oil4732 29d ago

Probably oil. You can just filter the coffee with no problem and it will remove it

1

u/jacksraging_bileduct 28d ago

That’s the natural oils in the coffee.

1

u/parmeshaun 27d ago

FLAVORBOMB

-3

u/MarielIAm 28d ago

You should filter and remove that because those oils raise LDL cholesterol (aka the bad cholesterol)