  We present a novel way of testing the seesaw origin of neutrino mass in the
context of the minimal Left-Right Symmetric Model. It is based on the
connection between the leptonic interactions of the doubly charged scalars,
whose presence is at the core of the seesaw mechanism, and the neutrino Dirac
Yukawa couplings which govern, among other processes, the right-handed neutrino
decays into left-handed charged leptons. We prove that any physical quantity
depending on these couplings is a function of the hermitian part only which can
significantly simplify their future experimental determination.
