Goq, thanks anyway. One of THE best chocolate cake recipes is right on the back of a Hershy’s cocoa canister. If memory serves, it’s pareve, but if not, we always made it pareve, and that’s how I recall it (if that turns out to be the recipe your mom made, that would be really funny).
That reminds me of an episode of a tv comedy where the entire joke was around one main character trying to duplicate the amazing cookie recipe of another character’s late grandma. It was apparently supposededly a secret French recipe. After baking a gazillion batches of delicious cookies but all were “just not quite how grandma made them,” the hapless cookie baker, discovered that her friend’s “nezlay toulouseh” special cookie recipe was on the back of a Nestle’s Tollhouse chocolate chips package, which by the way, IMO ARE the best chocolate chip cookie recipe I have ever tasted. (Now we use certified pareve chips, as Nestles were made dairy or DE several years ago).