Across the world, people want to save money on food, but shopping habits vary a lot.

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Roughly a fifth of the people polled now bring a flask and food to work to save money, and the average time spent on lunch has shrunk from a far-from-leisurely 33 minutes to an indigestion-inducing 19 minutes over the same period.

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"There are thousands of entrepreneurs, millions across this country, who do incredible things and make money to put food on the table, to pay their bills, and to save for the future and their children, " she says.

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The pair are among a group of packaged food companies that have benefited as Americans cut down on dining out to eat at home and save money.

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