Well, let's say it this way:
Sazerac company at their George T Stagg distillery in Frankfort made the current Sazerac NAS and Handy. There is every reason to believe they are the same distillate as each other.
Sazerac company is thought to have bought the Sazerac 18 from either one or two outside sources. They may not even know the mashbill(s) because they didn't make it.



