Throughout the 1990s, I often visited Southern Finland with my family. More specifically, Hanko/Hangö.
In the stores, in the refrigerated area, they sold these yummy-looking desserts, or possibly food products. I'm not fully sure what they were, and I'm unsure if we ever bought any of them. (As a non-spoiled child, every little coin was precious to me and not to be "wasted" unless I could be completely sure in advance that it would taste good.)
I'm now trying to find out what these were called, and/or a photograph of the product. I don't remember any kind of branding/label or anything.
All I remember is that it was like a transparent plastic "circular" package, more or less approximating the dimensions of a normal (not too large) dining plate, but "thicker" (taller). It contained some sort of red "goo", possibly/probably some sort of jelly, with milk (or something resembling milk) poured around/over it, which looked extremely nice visually, the way the red and white parts were not muddled together but kept separated.
I don't think it was simply "klappgröt"/"vispipuuro", which they also sold in a similar manner, but that was more pinkish and separate from this dish: https://upload.wikimedia.org/wikipedia/commons/thumb/f/fb/Klappgr%C3%B6t.jpg/1280px-Klappgr%C3%B6t.jpg
This is probably a long shot, but hopefully, somebody might be able to know what this was called. Even if you do, however, it might not be possible for me to find a photo online, since it might very well be a very local and obscure product. You know, one of those many things which just cannot be found online no matter how much time you spend. Perhaps it was even made in-store and had no actual "trademark".