Anthony Bourdain's A Cook's Tour.
It's one of his early ones when he's still doing the whole gonzo thing and it grates a bit, but it's very readable and there are a few touching moments, like him going back to his family's old holiday home in France with his brother, trying to recreate their childhood holidays and eventually realising what he's really doing is looking for his dad who died back in the 80s.
One thing that winds me up is how self-conscious he can be. He does the Hunter Thompson thing whilst poking fun at himself for doing so and it feels a bit like he wants to have his cake and eat it. "Look how cool I am, I know it's not really cool and I'm being silly, but look how cool I am." You get another bit like that where he's wandering around Vietnam and encounters a man who appears to have been caught in a napalm strike, has this crisis of conscience and is all "What the fuck am I doing here writing a fucking book?" but then, of course, the piece ends and he carries on writing his book.