Cool Whip Competitor 70's-80's?

My Mom and I are having a disagreement. When I was kid I remember she always bought a certain brand of 'cool whip.' It wasn't "COOL WHIP" brand, though. It was another national brand, which I think a blue label. (I am talking about the little refrigerated tubs, not the cans.)

I distinctly remember this because she could not stand COOL WHIP and said it turned to water. When I got older and started to drive, I accidentally picked up COOL WHIP for her and never heard the end of it!

But now she doesn't remember that and thinks she always used COOL WHIP, but I can't remember the name of the other brand... It's driving me crazy now... Does anyone remember a national competing brand to COOL WHIP back in the 70s-80s, possibly even the early 90's? Thanks!