Originally Posted by
freecia
I've hand carried Hokkaido Milk Pudding which is more like a flan texture via carry-on on a TPAC 8-9 hour flight. I wouldn't entirely advise this as Narita security had a sign which looked like a pudding cup with a big NO circle on it. I think mine went through as it was still fairly solid at security screening..
Security at Narita were diligent enough to check the small Lawson bag I was carrying. I wound up having a quick Hokkaido pudding snack in the middle of the inspection area, with smiling officials for encouragement.
Pro tip: If one's going to chance a few cups through, make sure to bring the spoon.