-full- 9yo Sanpo 6l Now

Another possibility is that the user is referring to a Japanese whisky from another company that uses "Sanpo" in their naming, but I can't recall any. Maybe the user got the name wrong. For example, if it's supposed to be "Sanpu," but that's unfamiliar. Alternatively, maybe it's "Sapporo San" (san meaning three) or another variation.