What kind of grape is in this wine???

Often it is on the label.  If a grape variety (Merlot, or Chardonnay) is named on the label, then a minimum of 75% of that grape must make up that wine in the US.  If the wine is European, the grape varietal will probably not be mentioned on the label; rather it will list the region where the grapes were grown.  Don't be afraid to ask us what type of grape varietal --  or varietals if it's a blend -- are used in the wine.