I know most of the roads out there, but haven’t really correlated them wineries. The ones I’m familiar with are off of 522/Hume Rd, and Naked Mountain (although I think that one is defunct.)
There are some great roads in the area you’re asking about. Even 211 and 522 are rideable. If you can do a teeny amount of gravel you have some even nicer options (but a bit hillier.) This is one I just made up, that takes in some of my favorite roads:
http://ridewithgps.com/routes/4348154
There’s a small amount of gravel on Aaron Mountain Rd, and about 1/2 mile or so on Gid Brown Hollow, but it’s easily doable on a road bike.
This would be a great ride even without the wineries 