Go to Japan and you’ll find hundreds of ever-changing flavors of Kit Kat. We aren’t talking dark chocolate and milk chocolate here. Kit Kat has been taken over by the Japanese tradition of omiyage, ...

OSAKA — With my flight boarding at a nearby gate, I raced through the shops of the small airport frantically grabbing at multicolored boxes of Kit Kat bars. Sake-flavored Kit Kat? Check! Wasabi Kit ...