What is creamwell made of it used in icing for cakes?

"Creamwell" isn't a recognized ingredient used in cake icing. It's possible there's a typo or a brand name you're trying to remember.

To help you out, could you tell me:

* What kind of icing are you thinking of? (e.g., buttercream, royal icing, fondant)

* What is the texture of the ingredient you're looking for? (e.g., thick, runny, smooth, grainy)

* What does it look like? (e.g., white, brown, clear)

With more information, I can try to figure out what ingredient you're referring to.