It seems like this might be a local or informal nickname given to a restaurant or takeaway that is known for serving poppadoms, or perhaps Indian cuisine more broadly. Such nicknames can arise from how a place is known in a community or due to a signature dish they serve. If the restaurant prominently features poppadoms, it’s possible that the child and others in the area colloquially refer to it that way. To get more clarity, you could ask more local residents or check with the restaurant itself if they are aware of the nickname. It’s also worth exploring local forums or community groups to see if others recognize this nickname.
Bracknell