Perhaps many Americans would be surprised at a Japanese tradition at Christmas. Eating KFC at Christmas is popular among Japanese. KFC, of course, is the American fast food chain Kentucky Fried Chicken. KFC started the tradition in 1974 with a successfuladvertising campaign.
The catchphrase of the marketing campaign was ‘Kurisumasu ni wa kentakkii!’ (Kentucky for Christmas!) The copy hit with Japanese people and many people thought eating KFC or chicken was an American custom and seemed ultra cool.
Another tradition is eating a cake decorated with strawberries at Christmas. I'm not sure when it started but maybe because of a Christmas campain that some sweets shop did.