As I understand it, you can't see beyond the Cosmic Microwave Background Radiation because the plasma of the early universe was opaque to electromagnetic radiation. What if you had a "neutrino telescope" with sufficient resolution? Would you be able to observe the primordial universe from before recombination?
Yes, but it should be stated that the cosmic neutrino background is expected to be very cold and very difficult to see. Also, note that when temperatures approach the electroweak unification scale, the electroweak force will treat electrons and neutrinos identically, and the universe will become opaque to neutrinos.