My friend and I made a batch of cold brew and I'm not sure what to do now.

Let me start from the beginning.<br><br>My friend and I (let’s call him Tony) met up to make a batch of cold brew. Tony had done it once before, but I had not. So, we ran down the list to make sure we had everything. We were planning on making a liter of cold brew, so we needed:<br>A gallon (4L) container with a lid<br>Coffee grounds<br>A coffee grinder <br>A fine-mesh strainer<br>A water filter<br>A spoon<br>A pitcher<br>A strainer<br>We accidentally left the water filter behind. But we decided to go for it anyway and we did the best we could without that filter. I don’t think it would’ve mattered in the end, but I’m bringing it up because we did know the process. So, it should’ve been pretty easy. Tony didn’t bring his coffee grinder, so we left it out. We had everything else.<br><br>Tony said we needed to grind the coffee beans. He used a strange electronic device (kind of shaped like a power drill) for it. I didn’t ask, but I assume it was a substitute for the grinder. The beans were black, but the ground beans were a dark brown and smelled pretty nice. The coffee beans were made of Arabica. I don’t know if that makes a difference, but I thought I’d mention it.<br><br>We mixed the ground coffee in the gallon container and poured in a gallons worth of water to mix and let it sit for a little under 24 hours. The only problem I can think of was the straining process. We decided to mix two strainers together. I just hope we didn’t accidentally strain out too much of the coffee mixture.<br><br>The next day, we decided to give the coffee a taste. Well, we skipped right to the end and made coffee w/ milk & sugar and then we drank it. <br><br>It looked a little different. It didn’t have the dark color of regular coffee. It was actually very light – almost yellowish in color. We didn’t think much of it. After all, we had skipped a lot of the steps. And it smelled the same.<br><br>The taste was a little different though. While it was still a rich coffee taste, it was a little sweeter. I think the sugar may have contributed to that, but it also had a floral taste. Maybe it was the cream/milk? We mixed in a lot of that.<br><br>Oh well, the coffee was great. I started to clean up the coffee grounds and the container. But, when I opened it and was about to dump out the grounds, the coffee’s liquid was gone. But in its place, was a greasy liquid. It looked like oil. I called Tony over and he was pretty surprised. He didn’t know what it was, so we left it alone. We stuck it in the freezer. We went on with our day and just forgot about it.<br><br>It’s been a couple of days and I just remembered this. I went to a friend’s house last night and had a few drinks and completely forgot about it. But the first thing I remember this morning is the oil.<br><br>I’ve looked it up and I don’t really know what to do with it. Thanks.