Verdant in Falmouth is the beer wanker destination I’m sure, but the tour of St Austell is nice, it’s an old Victorian tower brewery, and Tribute, Proper Job and HSD are all lovely beers on cask if they’re in good nick in a decent pub.
I’ve only really spent much time in Padstow, which is nice enough, very touristy and Rick Steiny (no bad thing), there’s a good bakery which does the Chuff Challenge, a pasty the size of a rugby ball or near enough, have a crack at that.