Apologies to Deep Purple.  This summer’s fires in Northern California left many worried about “smoke taint” damage to the grapes in Lake and Mendocino counties.  Two large wineries are now refusing to buy grapes from those two counties because of high levels of guaiacol and 4-methylguaiacol that have been detected in those grapes.  For details and an explanation of how smoke can taint wine, read the story from WineBusiness.com.