  Inclusive hadron production in $e^+e^-$ annihilation has long been used to
study both single hadron fragmentation functions (FF) and dihadron
fragmentation functions (DiFF). In particular, the polarized DiFFs can be
accessed in electron-positron annihilation by measuring azimuthal correlations
between two back-to-back pairs of hadrons in the center of mass system, where
the relevant structure functions can be expressed as convolutions of two
(polarized) DiFFs. Here we explore the advantages of measuring the inclusive
back-to-back production of a single hadron on one side against a hadron pair on
the opposite side of the detector in two jet events. The leading twist cross
section for this process contains convolutions of the corresponding single
hadron FFs on one side and the DiFFs for the hadron pair on the other side,
which furnishes several interesting new opportunities. A measurement of the
unpolarized cross section with a number of different types of observed hadrons
will help in untangling the quark flavor dependence of the unpolarized DiFFs,
when the results are analyzed together with the inclusive measurements of
dihadron pairs, such as those recently performed by the $\texttt{BELLE}$
collaboration. Even more interesting, with a polarized hyperon on one side we
can study the quark spin-dependent DiFFs of an unpolarized hadron pair on the
other side. This, in turn, will allow us to test the universality of the
spin-dependent DiFFs entering the cross sections of electron-positron
annihilation and semi-inclusive deep inelastic scattering processes.
