  The cold plus hot dark matter (CHDM) model is arguably the best theory we
currently have for a consistent description of the observed large scale
structure formation. This is especially true if the primordial density
fluctuations are assumed to be essentially scale invariant, in which case a
mixture with 20-25 % HDM, 5- 10 % baryons, and the rest in CDM correctly
predicted (in 1989) the quadrupole anisotropy measured a few years later by the
COBE satellite. After a brief historical introduction, we present a model of
supersymmetric inflation in which the CHDM model is neatly realized with a
spectral index n= 0.98, while the dark matter consists of a few eV `tau'
neutrino and the LSP (essentially the `bino'). We also provide a comparison of
this model against the observations.
