I'm inclined
to start using {Hergh qulcher}.

Odd. The KLI's New Words List doesn't list qulcher cream separately from nIm qulcher taD ice cream.

In English, cream by itself might be assumed to be a kind of food, or it might refer to any substance of that texture. It really depends on how it's used.

In Klingon, we also have the word 'Ir be creamy, pasty, which has the note "in the sense of toothpaste. Describes smooth, thick liquids or liquid-like things." So the substance you want can definitely be described as 'Ir, and in a pinch you could describe it as 'IrwI' creamy thing, pasty thing.

Since the Klingon describes ice cream specifically as nIm qulcher taD frozen milk ??????, and since 'Ir and qulcher were given to us in the same qep'a', I am inclined to believe that qulcher can refer to any substance with a creamy, pasty texture, not just dairy-based cream. If this is correct, then an unguent is a kind of qulcher.

Then there's the pun: the word qulcher sounds like culture, which is what you use to grow things like bacteria. A yogurt culture is the bacteria used to make yogurt, and yogurt is creamy, but you usually don't call yogurt cream.

-- 
SuStel
http://trimboli.name