This is my second Four Roses review, the first being the Small Batch, and I gotta say, Four Roses has got it going on! For those that don't know, Four Roses has five separate yeast strains and two separate mash bills resulting in ten distinct recipes. These recipes are designated by four character codes. The first letter in the code is always "O" which indicates that it was produced at the Four Roses distillery in Lawrenceburg, KY. The third letter is always "S", for Straight Bourbon whiskey. The remaining two letters indicate the yeast strain and the mash bill. Four Roses Single Barrel is always OBSV. "B" is the mash bill that is 60/35/5 corn/rye/barley, and "V" is the yeast strain that is delicate fruit, spicy, and creamy. This whiskey is all that. This dram is a deep gold/medium amber in the glass that produces nice strong legs when swirled. This particular bottle is from warehouse MW, barrel 50-2I and it is bottled at 50% ABV. The nose has a light fruitiness (apple, pear), vanilla, and caramel. There is little to no alcohol burn. This is a little surprising considering the ABV. In the mouth this bourbon is buttery smooth. Notes of butter, cinnamon, caramel, and corn sweetness with rich oak dominate. The heat from the ABV is minimal. There are hints of fruit and rye spice as well. The rye is apparent, but not overpowering. The balance between sweetness and spice is just about perfect. The finish is eternal. Warm, oaky char and lingering rye spice hang on forever. Ten minutes after my second glass I'm still tasting the deep spice tones that were counterbalanced by the sweetness on the palate. This bottle is an absolute marvel at $37. Considering that this is widely available under $40 there is no reason this shouldn't be on your shelf. Get some! 4.5/5.0. Cheers!