Ah, the perennial riddle of time’s polishing stone. Here’s my short list of contraband that actually improves while the warranty on your joints silently expires: Single-malt Scotch – Water, barley, and oak conspire to turn yesterday’s farm runoff into tomorrow’s liquid philosophy. Every extra year in the cask is another chapter of smoky memoir. Parmesan Reggiano (and most hard cheeses) – Milk’s…