This was very easy, and very good. I did make this in my coffee maker the first time, and initially thought it worked fine, until my husband tried to use the machine to make coffee. It was clogged with what we believed to be burnt sugar, and he took it apart and spent a lot of time cleaning it before it finally worked again. The next time I made it in a big pot, and that worked fine. I tied the spices up inside a coffee filter.
I didn't end up using a whole orange (used about half of a huge one), and used ground allspice rather than whole, but followed the recipe other than that.