Is Wild Turkey Master's Keep Cornerstone a bourbon or a rye?
Cornerstone is a Kentucky straight rye whiskey — the first rye Wild Turkey released in the Master's Keep series, which had been bourbon-only until 2019.
How old is Master's Keep Cornerstone rye?
Cornerstone draws on rye barrels aged between nine and eleven years. Federal labelling rules require any stated age to be that of the youngest whiskey in a blend, so nine years is the figure that governs the label while the oldest barrels in it ran to eleven.
What proof is Master's Keep Cornerstone bottled at?
Master's Keep Cornerstone is bottled at 109 proof, or 54.5% ABV. At release it was the highest-proof rye whiskey Wild Turkey had put out, alongside being its oldest.