Volume Absorption not working I am making a cup of coffee. I created the liquid as a mesh with transmission as 0 and applied volume absorption to the mesh in order to create that darker look, however, there is no change in the appearance of the liquid after applying the volume absorption.

I cannot figure out why the absorption is not applying. I have set the density to 584 so that can't be the issue. So why does the appearance of the liquid not change?
user1853's comment in pictures :)

Change Transmission to 1

... or use Glass shader instead of Principled BSDF.

The only weird thing is when I replicate your node, result is totally white, not transparent as yours ... hm. Some changes happened from 2.81?