An elevated conveyor carries the potatoes into the noisy and dimly lit plant, which smells of wet vegetables and cooking oil.

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People sell everything here - vegetables, cooking oil packed in 50ml (yes 50ml) plastic tubes, sugar by the tablespoon - anything really.

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Vendors sell vegetables and cooking oil.

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The prices of basic food items such as bread, milk, vegetables, and cooking oil, which rose 47 percent between 2011 and 2012, continue to climb.

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As the growing season progresses from the tender lettuces of early summer to the woody root vegetables of autumn, cooking methods and holding points should adapt, says Ms. Welsh.

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Some vegetables are grown locally, but dairy products, cooking oil, sugar all have to be flown in.

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Fresh vegetables and fruit are commonly available and we use a lot of olive oil in cooking, and less animal fats than is found in British dishes.

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