This is a glass cup ! Drink Juice Now ! Two Objects : drink glass cup and glass Jug.
To add glass material you should append FinalGlassAndMaterial.blend to your work :
from blender UI click on Files/append/FinalGlassAndMaterial.blend/Material/Glass .
Note: I have attached the files in .rar files and directly(not archived) as you like to open,
To use it for CYCLE render go to the material and change value (Fac) to half (0.5),
To use it for Eevee render go to the material and change value (Fac) to 1.