[RESOLVED] - Liquid roughness?

[cjwidd]

How is it possible to modify roughness values for the liquid material type? Currently, the shader only accepts bump and opacity channels.

In the attached image you can see the bottom of a cup of coffee. There is a swirling film on the surface of the liquid and this is what I'd like to try and recreate with Keyshot materials - definitely seems like a challenge(?)

EDIT: use a dialectric material instead

[designgestalt]

would you mind sharing your result?
I would be interested to see what it looks like !
thanks
designgestalt

[cjwidd]

would you mind sharing your result?
I would be interested to see what it looks like !
thanks
designgestalt

I've started posting progress on a separate thread.