Lighting and shading Orange juice Reference image:


(larger versions here)

Attempt 1

Simple SSS shader:

  

setup:



Less simple SSS attempt:

 

I also tried a absorption shader: (the absorption node group is from this tutorial)





My main question is, how to get that lightening effect around the edges, as there is less juice between the light and the camera.. (and also make it more transparent/refractive)
like here: 

(and in general, make it look more like orange juice)

Thanks
The SSS material is the one your going to want to use. The reference is showing light scatter. The issue your having is lighting. There's not enough light for that edge to show.

Here's what I got after a few minutes of experimenting:



I have a large light source has a strength of 10.0 and I have an environment map in the background. That's what gives it enough light to scatter.
Here's the scene setup:



Your shader looks OK, but if your interested, here's mine: