The key will be setting up refractions and caustics properly. You can look up the actual refractive index of liquids, or just play with the refraction until you get the look you want. For the caustics, you will need to set your light source up to cast photons, and render using Mental Ray with caustics settings turned on.

There is a nice glass bottle tutorial here:
https://www.deathfall.com/tutorials.p...wcontent&id=83

It uses the l_glass plugin which you can find here:
https://www.highend3d.com/maya/downlo...misc/3192.html