Caustics for 2.70

Can someone be so generous as to either instruct me where or show me how to make believable caustics for version 2.70.

I’ve been looking here & there but some of the instructions, when I use them, it doesn’t do anywhere near the appearance so it’s getting quite frustrating.

Forget the olive, the glass’s shadow / reflection, etc. isn’t proper.

Which rendering system are you using? Blender Internal or Cycles? That will greatly influence the advice you get.

I noticed after I posted this.