{"product_id":"four-roses-obsk-obsf-oeso-oesk-single-barrel-bourbon-bundle-limited-edition-whiskey","title":"Four Roses Single Barrel Kentucky Straight Bourbon Whiskey 4-Bottle Recipe Bundle — OBSK, OBSF, OESO, OESK 750ml x4","description":"\u003cp\u003eThis four-bottle bundle brings together four distinct Single Barrel expressions from Four Roses Distillery in Lawrenceburg, Kentucky, each drawn from a different recipe combination — OBSK, OBSF, OESO, and OESK. Together they represent one of the most educational and compelling tasting sets in American bourbon, showcasing exactly how much the choice of yeast strain and mash bill can transform a whiskey made at the same distillery, in the same warehouse, by the same Master Distiller.\u003c\/p\u003e\n\n\u003cp\u003eFour Roses uses two mash bills — Mash Bill B (60% corn, 35% rye, 5% malted barley, the higher-rye of the two) and Mash Bill E (75% corn, 20% rye, 5% malted barley, the more corn-forward) — combined with five proprietary yeast strains (V, K, O, Q, F), each of which imparts a distinctly different flavor character. The four-letter recipe code on each bottle tells the full story: the first letter (O) identifies the distillery (Old Prentice\/Four Roses), the second letter the mash bill (B or E), the third letter identifies that it is a straight bourbon (S), and the fourth letter is the yeast strain. Each bottle in this bundle is a single barrel expression — one barrel, one unique flavor profile — bottled at 50% ABV and 100 proof.\u003c\/p\u003e\n\n\u003ch2\u003eThe Four Recipes — Decoded\u003c\/h2\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOBSK\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMash Bill B (high rye, 35%) + Yeast K — bold spice, full body, and rich fruit. One of the most assertive and complex recipes in the lineup.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOBSF\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMash Bill B (high rye, 35%) + Yeast F — herbal, floral, and caramel-forward with a softer rye presence than OBSK.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOESO\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMash Bill E (lower rye, 20%) + Yeast O — rich, fruity, and floral; one of the most approachable and elegant recipes. Yeast O is known for bringing prominent fruit and floral characteristics.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOESK\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMash Bill E (lower rye, 20%) + Yeast K — creamy, slightly sweet, and balanced with bold spice from Yeast K on the more corn-forward base. A popular contrast to the B mash bill expressions.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ch2\u003eABV \/ Proof\u003c\/h2\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDistillery\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFour Roses Distillery, Lawrenceburg, Kentucky\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProducer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eKirin Brewery Company\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eKentucky Straight Bourbon Whiskey — Single Barrel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRecipes Included\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOBSK, OBSF, OESO, OESK\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMash Bills\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eB: 60% Corn, 35% Rye, 5% Malted Barley \/ E: 75% Corn, 20% Rye, 5% Malted Barley\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eABV\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50% (each bottle)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProof\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100 Proof (each bottle)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBottle Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e750ml x 4 bottles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUnited States\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRegion\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eKentucky — Lawrenceburg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ch2\u003eTasting Notes\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eOBSK:\u003c\/strong\u003e Bold spice, full body, rich dark fruit, and baking spice. The combination of the high-rye B mash bill and Yeast K produces one of the most intense and layered expressions in the Four Roses single barrel range.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOBSF:\u003c\/strong\u003e Herbal, creamy, and caramel-forward. Yeast F softens the rye spice of the B mash bill into a rounder, more floral expression with gentle fruit notes and a lighter body.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOESO:\u003c\/strong\u003e Fruity, floral, and elegant — overripe stone fruit, honey, and light oak. Yeast O on the E mash bill produces one of the most approachable and nuanced expressions in the lineup, prized by both new and experienced bourbon drinkers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOESK:\u003c\/strong\u003e Creamy and balanced — caramel, vanilla, and corn sweetness from the E mash bill with spice and structure from Yeast K. A versatile and crowd-pleasing expression that bridges the gap between the two mash bills.\u003c\/p\u003e\n\n\u003ch2\u003eFAQ\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eHow does Four Roses create so many distinct single barrel expressions?\u003c\/strong\u003e\u003cbr\u003eFour Roses is unique in American bourbon in using two separate mash bills combined with five proprietary yeast strains, creating ten possible recipe combinations. Each yeast strain (V, K, O, Q, F) imparts a distinctly different flavor character — from bold spice to delicate floral notes — while the two mash bills provide either a higher-rye backbone (B, 35% rye) or a more corn-forward base (E, 20% rye). When drawn as single barrel expressions, each recipe emerges as its own entirely separate whiskey despite being produced at the same distillery with the same process.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy does the proof vary slightly between individual bottles in the set?\u003c\/strong\u003e\u003cbr\u003eFour Roses Single Barrel is bottled at a standard 100 proof (50% ABV) for the core single barrel release. However, barrel-specific variations in label details (warehouse, barrel number, distillation date) mean each bottle in the set comes from a unique individual barrel — the flavor profiles will differ even within the same recipe code from barrel to barrel.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat order should I taste these in?\u003c\/strong\u003e\u003cbr\u003eStarting lightest to boldest is recommended: OESO (most fruit-forward and floral) → OESK (balanced and creamy) → OBSF (herbal and caramel) → OBSK (boldest spice and fruit). This allows the more assertive B mash bill expressions to be appreciated after the palate has been calibrated by the E mash bill bottles.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhere can I buy the Four Roses Single Barrel Recipe Bundle online?\u003c\/strong\u003e\u003cbr\u003eAvailable here at Liquor On Broadway while stock lasts, with fast insured shipping nationwide.\u003c\/p\u003e","brand":"Four Roses","offers":[{"title":"Default Title","offer_id":48151022239999,"sku":"LOB-00131","price":195.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0234\/6401\/7997\/files\/four-roses-obsk-obsf-oeso-oesk-single-barrel-bourbon-bundle-limited-edition-whiskey-5123812.png?v=1770793746","url":"https:\/\/www.liquoronbroadway.com\/products\/four-roses-obsk-obsf-oeso-oesk-single-barrel-bourbon-bundle-limited-edition-whiskey","provider":"Liquor On Broadway","version":"1.0","type":"link"}