The meat thermometer I purchased sends data via RF to a base station, so I though I would try an listen for it using an Arduino. This was a bit much to try and reverse engineer using the Arduino so I grabbed my Spartan 3E development board and created a two channel oscilloscope. Now I could see the data that was being sent over RF and attempt to reverse engineer the format.
I tried keeping the temp probe in a glass of ice-water however the temp sensor output kept fluctuating. The sensor also sent out a large amount of data during every burst, and as such I ended up deciding it was no longer worth the effort to reverse engineer the data burst and that it would be easier to connect the probe directly to the Arduino.
In the end the project was successful as I now have a homemade oscilloscope to use in debugging future Arduino projects.
The source code is now available on bitbucket.
This is a video I took of the oscilloscope during integration.