The brothers power their farm and cheese factory using an anaerobic digestion system, which turns organic waste into fuel, and cuts down on greenhouse gas emissions.

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The package takes in a tour of a local cheese factory and features a chocolate making workshop illustrating the links between the cocoa produced by its Fairtrade twin town in Ghana.

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"So to the extent that Freida the fertilizer salesperson or Chuck the cheese factory worker are worried about their own well-being, so too they should be worried about Miguel the milker and Pepe the peach picker, " he says.

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For the investment club, it meant the possibility of having a few extra dollars for some hard working finance folks and an all-expense outing at the Cheese Cake Factory.

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Part of the price was government money for a cheese-processing factory in the town of Ponte de Lima, of which Mr Campelo is mayor.

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In Kazakhstan's old capital of Almaty, a modern factory produces Kourt, a hard cheese, and a range of camel milk sweets.

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They did open factory across Efratis, a feta cheese company that eventually got into the yogurt business of its own, but on a larger scale, dominating the Greek yogurt market.

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