McDonald’s has announced its newest McFlurry flavour, one that’s made with syrup and chopped, crunchy candy pieces and described as a “sweet ode to grandmas everywhere.” The Grandma McFlurry is the latest twist on the fast-food giant’s famous shake — this one featuring delicious syrup and crunchy candy pieces blended into creamy vanilla soft serve. Announcing the launch of the new McFlurry on Thursday, McDonald’s did not confirm an international roll-out of the flavour, but said the new McFlurry flavour is set to be available in the US for a limited time beginning May 21. Those in New York can…