Can you cook dinner in an airfryer to save yourself some money? Is the traditional turkey centrepiece a thing of the past? And how much has our festive food changed over the last hundred years?In this Which? investigation we take a look at how our Christmas eating habits are changing. We'll also be lifting the lid on some of our intensive testing here at Which? to reveal the best value products, and giving you some ideas on how to impress your guests for less this holiday season. Read more of our best value taste test results on Christmas food and drink & sign up to our food & health newsletter.