@Operation_Recon
The coffee dust settling part could also mean french press coffee too (you use the press as a barrier before serving it, it use expresso sized grain for it compared to Turkish coffee (that's what yours are called in wiki.en) which very coarse, right?
@henman I do not know how to describe it which is why I referenced Nanako's dad (Yoshihiko). Here is one image (out of the few reactions he could do) (the one on the right to be specific. The one on the left don't seem to fit this father's character)