Lonely Planet says it best: “Sorry; scrape the brains back into your ear, because we just blew your mind. That’s right: looks like a cheeseburger, but that ain’t melted cheddar on top. Honestly, it’s great: somehow the stickiness of the peanut butter complements the char grilled edge of the meat. There’s lots of other awesome burgers on the menu, but it’s incumbent on you, dear traveler, to eat the native cuisine of a city. In Hanoi, there’s Pho, in Marrakech, Tagine; and in New Orleans: peanut butter and bacon burger.”

Lucy and I have eaten in some pretty fancy restaurants over our years of living in London and New York, and we have always tried to keep the concept of value separate from the hard fact of price. We will happily spend a little more on a really excellent meal for a special occasion than on a merely average one. But how much more? And given exponential prices at the top end, how far does the relationship stretch? Is an oversized steak in NYC at $33 really ten times as tasty as a Big Mac at $3.29? (let’s just say we don’t eat much steak). We once ate a meal at the Fat Duck in the UK which marred fine dining for us ever since, by establishing a reference price point at which everything you are served has to make you laugh. Décor is a different matter again. Let’s just say that we once had a good but (predictably) expensive and (predictably) not great meal in a restaurant in Las Vegas with $100m of Picassos on the walls.

So this brings us to New Orleans. Ah, New Orleans – home of Crawfish, Gumbo, Jambalaya and the Deep Fried Oyster Sandwich. We had been happily scoffing smoked ribs for a few days in Nashville and Memphis and thought that our diet was perhaps missing a little … class (that well known food group). There are a number of fine restaurants in the Big Easy that reinterpret Cajun cooking for the squeamish, and we had two wonderful nights out at Bayonna and K Paul’s: frog leg buffalo wings, jerk duck, rabbit jambalaya and snickers tarts were washed down with a (half) bottle of Chateau Musar and the occasional mint julep refugee from Kentucky. It was very, very good.

But it wasn’t great. For that, you have to accompany us to a couple of deep, dark dives which shall remain nameless for fear of too many tourists like us. Huge expanses of deep fried chicken livers in grape jelly, a deep fried oyster sandwich as big as my arm, and crawfish jambalaya which may or may not have contained relatives of the large dark rat we saw in the small dark corner. Perhaps it was the shock of eating an only-one-a-day-sized meal for less than $15 a head. Perhaps it was the old adage that the very best food is eaten when you are truly hungry. Whatever. In New Orleans, cheap and dirty is definitely the way to go.