Yabby Lake on the Mornington Peninsula is a popular place for lunch, so book ahead if you are planning to visit. The views towards the ocean are quite wonderful when the weather is agreeable and the architecture takes wonderful advantage of the location to really show off the location.
In terms of wine, we found the entire range drinkable; some quite nice but generally on the expensive side. Even the red claw range (which are cheaper than the single vineyard wines) were mostly $28 per bottle, which is expensive compared to other regions and wineries.
Pinot Noir and Chardonnay are the stand out varieties at Yabby Lake and the Pinot Noir in particular is very well made. The colours are deep and rich but the flavours are on the softer side, so if this is your preference, these wines are well worth a try. If, on the other hand, you prefer more complex flavours in your Pinot Noir, there are perhaps better examples available for the price range.