London — Britain’s annual sandwich consumption produces the same amount of carbon dioxide as more than 8-million cars, according to a study published on Thursday.About 11.5-billion sandwiches are consumed in Britain each year, half of which are homemade and half bought, according to the British Sandwich Association (BSA).This annual consumption "generates, on average, 9.5-million tonnes of carbon dioxide, equivalent to the annual use of 8.6-million cars," said Adisa Azapagic, professor at Manchester University, which produced the study. The researchers studied the carbon footprint of 40 different fillings. Mass-produced sandwiches containing pork (bacon, ham or sausage) were found to have the largest footprint, followed by shop-bought varieties containing cheese or prawn.The most carbon-intensive filling was found to be the shop-bought "all-day breakfast", comprising egg, bacon and sausage. Producing this generates 1,441g of carbon dioxide, equivalent to the carbon emissions produce...

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