McDonald’s are ringing the changes, and sales are going through the roof

McDonald's Egg McMuffin has been in demand in recent months, with sales going through the roof.

And it's now been revealed that the soaring sales are down to one simple change. According to a report in The Mirror, the fast-food giants have stopped using margarine on the breakfast favourite, and have started to use butter instead. Over the pond, US restaurants have seen a 0.9% improvement in sales which bosses believe is down to the improvement in food quality. It's also been revealed that McDonald's has started to toast its buns for longer, and is altering the method in which burgers are grilled. According to the same report, 'the restaurant believes it is now beating the perception from some that its food is of low quality.'