* If you're thinking of cream as a dairy product, the closest abstract noun might be "richness" or "smoothness", referring to its texture and flavor. You could also use "fat content" or "dairy essence" if you want to be more specific.
* If you're thinking of cream as a color, then "whiteness" or "pale yellow" would be appropriate abstract nouns.
* If you're thinking of cream as a general term for a thick, smooth substance, then "consistency", "texture", or "smoothness" could all work.
Ultimately, the best abstract noun for "cream" will depend on the specific context in which you're using it.