Four Roses Single Barrel Recipe OESO Bourbon Whiskey

OESO is the rich-fruit recipe of the 2025 Four Roses Single Barrel Collection — the lower-rye E mashbill with the O yeast, at 100 proof, seven to nine years old, and Bourbon Guy's second pick of the four. Four Roses is the only distillery running two mashbills and five yeast strains into ten distinct bourbon recipes; the standard Single Barrel is always OBSV, and in 2025 the distillery put three of the other nine into wide release at 100 proof: OBSF, OESK, and OESO. OESO is the E mashbill — 75% corn, 20% rye, 5% malted barley — fermented with the O yeast, which the distillery describes as rich fruit and full body. Bourbon Guy: cinnamon and caramel on both nose and palate with oak present, and a finish of dominant spice with a hint of mint. Breaking Bourbon reviewed the 2025 OESO and found the O yeast's fruit — red berries and stone fruit — under a cinnamon-caramel frame. Expect a dessert-leaning, fruit-forward bourbon that reads sweeter than OESK and rounder than OBSF, with medium body and a spiced finish. Honest note: OESO is a component of Small Batch, so this is the fruit-and-cinnamon half of that blend on its own — the pick for the drinker who likes their bourbon sweet, and the middle bottle of the trio. Neat, in a Glencairn. Four Roses, the fruit recipe.

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