Office Hack: Iced Coffee

I have been made fun of today by many people. I had four coffee cups on my desk at work. Mostly because I leave them there from the prior day and rush to leave so they never get thrown out. So today there was leftover coffee in a Timmy's carafe from a meeting. It had gone cold and there was no microwave, so I thought to myself 'what is the best way to make use of this without all this good coffee going to waste?' The answer? Iced coffee.

Now I had no idea how this would turn out, but I had the theory in my head. If I had time, If I was home and tried this, I would have taken the coffee out and swirled it around every 15-20 minutes to maintain some fluidity. Like the same principles when forking through a granita. Here I would have to leave it to freeze. Why not test it out?

I mixed the coffee with milk and Splenda in a coffee cup and popped on a lid. We (I and my workmate) made four cups, his with cream and sugar. I assume that would turn out more slushee (like a icecap) and mine more icy and liquid. When I took them out the following day, this is how they appeared:

Frozen rock solid with a 'mound' in the middle. Wha......?

After a while of melting, this is how they appeared:

Yummy iced coffee with a icy ball of coffee in the middle.