I like the acidic taste of old/stale coffee.
I left my coffee at my desk over the weekend, and on Monday morning I took a sip. It tasted good. I did not heat it up, I drank it at room temperature.
But I read it is not advisable to drink coffee left out at room temperature because it is a medium for mold.
If I left it in the refrigerator for 2 days will it be safe to drink?