Imagine the scene.

You’re out and about, en route to an art gallery or a shopping trip. Or perhaps you work in a business park and it’s time for lunch. You’re hungry but there’s nowhere to eat. So you take your phone, log into Twitter and find there’s a New York-style food truck nearby offering street food to die for: braised Scottish ox cheek, slow-roast belly of Fife pork, daube of Angus beef with local potatoes, Perthshire strawberries with chilli ice-cream from the Borders. Nowhere on the online menu can you find the usual offering of Lorne sausage in a roll.

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