I have a bottle of Pappy 23 that is about half full. I also have a bottle of Colorado Malt Whiskey that is bit more than half full. Neither is a favorite of mine but both have their place.
A while back, Gary Gillman, who is prone to such musings, suggested that a touch of malt in some bourbon whiskies might add some flavor.
In the spirit of experimentation, I added about 3 ml to 50 ml of Pappy 23 to see if it would tame the tannins, supplement the sweetness, and dilute the dryness for which Pappy is so justly famous.
The Colorado did temper the tannins while adding to the sweetness. The dryness was only barely touched, but overall, I think the Pappy gained from this lopsided friendship.