I own a 2001 1/2 VW Passat 1.8l Turbo. My wife enjoys this car as much as I do. However I stumbled upon a problem this morning. I was looking for a pack of cigarettes that she had floating around in the car, I noticed that her leather jacket was hanging out in the backseat, so I pulled it up to see if I could find what I was looking for. Come to find out she either dropped a mocha, or some pop back there, which made it's way under the leather coat. I have no idea how long it had been sitting there, but it was long enough to cause some of the leather from the coat to STICK to the leather seats in the car. Best ideas to remove this? I was thinking leather cleaner, but I am thinking I need to use water to loosen it up first.

Thanks in advance.