Its a really basic shader. Nothing special. I think the secret and the magic for that is the high geometry (checker extruded faces) + Subsurface parameter in the shader. Be very carefull. Use very low changes in the Subsurface parameter number.
I would love to know how did you do to get that so clear cristaline glass in the cup and in the bottle (shader and light). Thanks!
Thanks. Out of curiosity I made comparison with your node set up and mine. Everything in the scene is the same just the nodes. I am surprised simple principle BSDF for glass in this occasion is effective.