Bottled at 108.2 proof, this complex release artfully marries four distinct bourbon recipes: a 12-year OBSV (31%) and 20-year OBSV (7%) featuring their high-rye mashbill, alongside a 15-year OESK (23%) and 16-year OESF (39%) made from their traditional mashbill. Each recipe contributes unique characteristics through Four Roses' signature combination of mashbills and proprietary yeast strains, creating an extraordinarily nuanced bourbon that showcases the distillery's mastery of blending.