Thanks so much! The particulates didn't look like oils, as they were less than a mil. long and were some what suspended throughout the concentrate. Perhaps it was some bizarre fluke.
I recently cold brewed some coffee at home using a french press, leaving it to brew for around 15 hours at room temperature. After I pressed the solution and emptied the concentrate into a small container, I immediately put it in the fridge. 2 days later I opened the container and found a small...