The USA is home to swathes of chain restaurants, cafés and fast food joints but there are some which people return to time and again for comforting favourites, from burgers and fried chicken to steaks and pizza. Restaurant Business has analysed the sales data and recorded the highest-grossing chains in the five years up to 2019. With a few surprises and some predictable top dogs, here are the nation’s top 50 chains. Click through to find out which is number one...