Might it have been one of the desserts in the Symingtons Range such as a creme caramel or blancmanges. In the back of my brain there is an image of a box with blue printing and a pic of the dessert on it, but I can't read the letters. We used to have a grocery shop many, many years ago where we served the customer, so I must have handled quite a few in my time. If it comes back to me me I will post. If it doesn't I'll ask my mum, she might remember.