New updated from halal foods in japan (oct 2015), you can click https://goo.gl/gq6N1O. Halal foods in Japan also call directly and kit kat admin says that they also put some shortening . If you still curious, you can send email to them, for me I think enough. Well, they thought halal is not important to their business, that’s OK. We do not need them also.
Picture taken from bravis.com
In the end of 2013, I heard from muslim community in Tokyo that emulsifier in Otona No Amasa Kit Kat was made from pork. I got the screen shot of email conversation but I I could not trace the source. Moreover, when I checked the ingredient, it said it made from plant. So, I sent email to Consumer.Services@jp.nestle.com to confirm the information.
within a week, they replied
After got confirmation, I informed others and it went viral.
Good news, yesterday I heard some information that Kit Kat has changed their emulsifier as written in the package. So, I sent email again, and they replied :
Kit kat has changed their emulsifier, now you can check as written in the ingredient.