  We study nonperturbative flavor correlations between pairs of leading and
next-to-leading charged hadrons within jets at the Electron-Ion Collider (EIC).
We introduce a charge correlation ratio observable $r_c$ that distinguishes
same- and opposite-sign charged pairs. Using Monte Carlo simulations with
different event generators, $r_c$ is examined as a function of various
kinematic variables for different combinations of hadron species, and the
feasibility of such measurements at the EIC is demonstrated. The precision
hadronization study we propose will provide new tests of hadronization models
and hopefully lead to improved quantitative, and perhaps eventually analytic,
understanding of nonperturbative QCD dynamics.
