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It's the quintessential fast food... Ever Wondered serves up the story of the hamburger.

The Americans claim it...but where did this food icon actually come from? What has the price of a burger got to do with the state of the economy? And how did its freezability help the hamburger dominate the world?

In the kitchen, Alan Coxon prepares gourmet beef burgers with a spicy tomato salsa, while Kathy Sykes gives her tips on achieving the best flavour from your barbecue.