Creating a Foggy Glass material...

A Foggy Glass material is basically a Glossy Layer with Medium enabled.

• Create a Glossy Layer.
• Change both Reflectance & Transmittance to white.
• Decrease Roughness to ~1%.

We have now created a Basic Glass material. Let’s move on to the Medium.

• Click on the Medium icon and enable it.
• Select a color for both Absorption & Scattering.
• Change both Absorption & Scattering values.
  Values depend on the size of your object and the look you are after.