Tasting Notes: Sazerac 18 Year Old Rye (2021 Buffalo Trace Antique Collection) Vital Stats: 45% Abv, 90 Proof. Distilled In Spring 2003. Aged 18 Years And 6 Months In #4 Charred New American Oak From Warehouses K And P. The Sour Mash Bill Consists Of Minnesota Rye, Kentucky Corn, And North Dakota Malted Barley.