Driving Vermont's Very Tasty Cheese Trail

I'D BEEN DRIVING for hours through southwest Vermont, steering my rental car up and down idyllic, tree-lined country roads that less resembled a transportation system than an unraveled ball of yarn. An atlas and a state map lay discarded on the passenger seat. Neither showed my destination, a farm somewhere along the flank of Vermont Route 30. A lot of farms lie along that road. I had no idea what would distinguish this one from the others.  Go there...