Otway Estate - Forrest
This is a bit of a back roads spin to Otway Estate winery from Forrest and returning to Forrest.
Leaving Forrest travel in a clockwise direction so you get most of the hard work done before you get to the beer and wine...You can stay in accomodation there too.
I've tried to use as much gravel and the rail trail as possible, there is a section of bitumen from Otway estate to Maggios Road, but thats pretty much it, itll give you time to settle back in before hittinng up the gravel again.
Check out their operation hours at www.otwayestate.com.au.