Hi Squire - I have never had Old Grand Dad... but I did find two references in a book by F. Paul Pacult - Kindred Spirits:
OLD GRAND DAD Kentucky Straight Bourbon 43% Alcohol
The very pretty and pure orange/copper color is classic bourbon; the nose is full-throttle grain, sharply sweet-sour and woody with dashes of spice and caramel - I like this no-razzle-dazzle bouquet a lot; at palate entry, it begins rather meekly, then in an explosive midpalate it bursts forward with biscuity, vanilla-wafer, and white chocolate tastes that capture the attention of the taste buds - riding a wave of manageable heat into the punchy aftertaste, OGD mellows out in the throat after about 30 seconds; this is what premium bourbon is all about - direct, almost reckless whiskey enjoyment that's a touch sweet, a bit warm, and appealing all the way home.
Rating *** Recommended $
OLD GRAND DAD 114-Barrel Proof Kentucky Straight Bourbon 57% Alcohol
Beautiful, deep topaz/bronze/orange hue, with very attractive amber highlights; as expected, potent and heady in the nose, but also astringent, pepperminty, and zesty - not what I'd term a deep complex bouquet - just straight on, fists cocked, and ready; on palate, it shows much more grace and gentility than in the pugnacious aroma, as well-defined, tightly focused sweet flavors of oak, pears, apricots, and dark caramel lead the taste buds to a moderately hot, though hardly unpleasant finish, where in the very tail end, the warm, rich flavor of oak-influenced vanilla completes the sensory impression.
Rating *** Recommended $ $
Copyright 1997 F. Pacult - Published by Hyperion, New York