this post was submitted on 24 Jan 2025
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Coffee
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@oreteau@lemmy.world cold brew stays fresh and good for days, I’d say a week at least, I guess you would probably need to worry about the safety factor before the flavour. However in the summer I usually make 1 liter and it get consumed in 4/5 days, but I think it can last more. Of course you need to keep the jar well sealed.
Note that after little time a thin white film starts forming on the surface. That’s totally normal and you shouldn’t worry about it, it is not mold (as it should need much more time to form) but some water and coffee minerals and residuals concentrating on top. It’s not aesthetically appealing but it’s totally safe.
i think the film can sometimes be solidified/congealed coffee oil