I googled substitute for Whip 'n' chill. This is what I found.
I think that you are looking for Whip & Chill. I understand that it is no longer made but I found this recipe on the internet. See if it sound like what you are looking for. Charlotte
HOMEMADE WHIP & CHILL
1 package vanilla pudding, cooked with 2 cups water. Cook till thick. Add 1 (3 ounce) package jello (strawberry) and mix till jello dissolves. Chill till cool. Fold in 1 medium carton Cool Whip.
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http://www.recipelink.com/msgbrd/boa...OCT/62873.html