THIS IS IT!!!
https://www.pinterest.cl/pin/503840277042736823/
The small can in vanilla flavor. That tasted like you put a spoonful of vanilla extract in whole milk. It was so good!
I remember that product. It was a weight gainer. In fact, Cybergenics came up with a gourmet line, with flavors like:
Blueberry Cheesecake
Strawberry Cheesecake
Rum Raisin
Peanut Butter Banana
Mint Chocolate Chip.
There were 9 of them. But I can't remember the rest. It's on the back of one of my favorite magazines from 1994. Actually, for a weight gainer, it had a lot more protein than its contemporaries (2:1 carb-to-protein ratio, in an era when that ration was 5:1 or 6:1...or even higher). The bulk of that protein was soy, which made those "gourmet" flavors even more interesting.