DINERS with a taste for the unusual are in for a treat from today — mayonnaise mixed with Terry’s Chocolate Orange. Creator Heinz says the sweet festive concoction is for slathering on crumpets or pancakes — or even eating straight from the jar. The creamy condiment, usually added to savoury sandwiches and salads, has been transformed just in time for Christmas. Heinz’s experts have blended mayonnaise — made with free-range eggs, vinegar and mustard seeds — with melted Terry’s Chocolate Orange segments and added a dose of orange oil. A limited number of jars of Heinz Seriously Good Terry’s Chocolate Orange Mayo have been made and can be won on the Heinz website.