OBSK recipe, 10 years and 1 month, bottled at 52%. On the nose, caramel, Blue Bell Peaches and Homemade Vanilla ice cream, clove, orange peel. The nose is really something. On the palate, starts with rich caramel and vanilla, grilled peach, cinnamon apple, citrus. The spice builds all the way through. The lower proof for a barrel strength gave me pause, but I'm glad I pulled the trigger on this one. The high rye recipe gives this one plenty of pow. I think the regular single barrel already punches well above its price point, but this is in a higher weight class. This is in the 4.25-4.5 range for me, but the Blue Bell ice cream note gives it the edge. Cheers to all the the dads! Update: subsequent tastings have me drop this a quarter point. It seems to have lost much of its spicy kick. This is settling in as more and more like the regular single barrel, which is a great bourbon, but this cost about twice as much. Coming down to 4 stars.