This is an actual food made in Japan. My husband brought it back from his latest business trip as a gift from a Japanese friend of ours. When I opened the bag (with quite a bit of curiosity) and tasted one, it turned out to be a kind of crunchy molasses meringue cup with a depression in the middle where, I assume, you put some goo. But what kind of goo?
Next time my husband goes to Japan, I really hope he comes back with a food called “Goo.”