Four Roses Single Barrel OBSF is a 2025 release Kentucky Straight Bourbon Whiskey bottled at 100 proof (50% ABV) and aged 7 to 9 years. The OBSF recipe is one of Four Roses' distinctive single barrel expressions, featuring a high-rye mash bill of 60% corn, 35% rye, and 5% malted barley paired with a proprietary yeast strain that imparts delicate herbal and minty complexity.

On the nose, OBSF presents mint, apple, allspice, and vanilla. The palate delivers lush notes of apple, vanilla, and cocoa with a bright touch of rye and a hint of brown sugar. The finish is rich and lasting, with a full-bodied character that seamlessly marries sweetness with mellow spice. This expression is equally well-suited to bourbon-forward cocktails such as an Old Fashioned or Highball, and is excellent enjoyed neat or on the rocks. Each bottle is drawn from a single barrel, meaning no two bottles are identical.