No SSS scattering in Cycles 2.66a??

I am trying to follow Price’s bread tutorial and yet can’t find the opinion for the SSS scattering in my blender 2.66a.

Does anyone know where it might be. Or how to activate it? Is it an addon?

There is no sss in 2.66 - download 2.67 from blender.org or a newer build from builder.blender.org to get sss in cycles