| Brief | InsightThough McDonald’s doesn’t serve mayonnaise as a dip, they do serve hundreds of other items. Among them we found The Mayo Chicken burger, which includes… mayo. In all McDonald’s restaurants and the McDonald’s app, you can customise your Mayo Chicken burger and remove ingredients until there's only one left - mayonnaise.IdeaWith this find, we launched The Mayo McHack - a hack that finally gave the UK their well deserved mayonnaise with their fries at McDonald’s. We launched the hack with an integrated campaign and encouraged people to customize their Mayo Chicken burger by de-selecting the chicken, the lettuce and the bun - leaving them with just the mayo. Mayo McHack finally made McDonald’s serve mayonnaise, and people who posted a photo of their hack were compensated for the £1.19 cost of the burger by Hellmann’s. |