Pepsi (via Suntory in Japan) is holding a promotion involving five new mystery flavors, collectively called Pepsi Ghost, in plastic PET bottles are decorated with different ghost images. The online companion site is in the form of a researcher's notes on product development with the ingredients blacked out. People can participate (as "research test subjects") on Facebook or Twitter to guess the mystery flavors. No prizes are mentioned. ペプシゴースト サントリー
Photo is a web capture for explanatory purposes, copyright belongs to the company.