More info about the results of that "chocolate stout" mentioned above.
I brewed a stout a few months back and piggy backed a Dragon's Silk Recipe (bourbon stout). That recipe called for about 12oz of bourbon to be soaked in oak chips the night before racking into secondary. That one came out pretty good, so I brewed another batch, but made some modifications. It was to be more of a chocolaty beer. I wanted it to be as chocolaty as possible, so I though why not soak the french oak chips in Godiva chocolate liquor? It did not occur to me that it was cream based at the time. I also added some Grand Marnier to the soak. To my dismay, the liquor seemed to curdle a bit and was very strange going into the secondary the next day. I stayed the course and continued on even though a I had a bad feeling about the outcome. After it was bottled, I waited a week or so. The beer was a bit strange, and you could see a small amount of cloud-like substance at the base of the neck of the bottles, hard to describe honestly. Anyway, it tasted ok. I saved one for a few months and drank it with my brother. That was some of the best brew I've ever made!! It just needed some time to age. Once I tasted that, we decided we needed to get started on this year's Thanksgiving Pumpkin Spice Porter asap. It needs to age a few months. Hope this helps.