[Blender Guru's Beer Tutorial] Beer inside glass looks like glass

Hi! I’m an beginner to Blender and i’m currently following Blender Guru’s Beer Tutorial.

I achieved to create the glass (it’s not perfect) but i have trobules with the beer inside. This is what i get:

This is beer’s material node:

These are beer’s normals (they doesn’t looks like in the tutorial):

I’ve already checked and there are no doubles to be removed. So what am i doing wrong? Thank you