just read this article in the UK paper. 7/11's in Singapore have introduced instant mash potato and gravy machines to their stores similar to the slushy machines. made by Maggi they mix hot water with instant mas powder and the put a nice dollop of chicken gravy on top. said to be like the KFC mash but better. The link is here
Watch the 7-Eleven machine that makes mashed potato and gravy just like a slurpee...just not in the U.S. yet | Mail Online
i'll give it a try if it reaches here for sure