It was always the same: a great wedge of papaya with limes, a crisp thin omelette with green chilis mixed in, two slices of inch-thick white-bread toast, a dollop of red jelly and of margarine, and a pot of coffee with milk.

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"We tend to think of mushrooms on toast or yeast in bread or beer, but they do so much more for us than that, " he says.

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She cited the example of a 90-year-old woman at Guy's Hospital in London who was forced to eat poached eggs on wholemeal toast when she wanted fried eggs on white bread.

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Since then the bread, which you get on prescription, has improved a bit but I still toast it to make it more palatable.

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