  The finite temperature chiral condensate for 2+1 quark flavors is considered
in the framework of the hadron resonance gas model. This requires some
dynamical information, for which two models are employed: one based on the
quark structure of hadrons combined with the Nambu-Jona-Lasinio approach to
chiral symmetry breaking, and one originating from gauge/gravity duality. Using
these insights, hadronic sigma terms are discussed in the context of recent
first principles results following from lattice QCD and chiral perturbation
theory. For the condensate, in generic agreement with lattice data it is found
that chiral symmetry restoration in the strange quark sector takes place at
higher temperatures than in the light quark sector. The importance of this
result for a recently proposed dynamical model of hadronic freeze-out in
heavy-ion collisions is outlined.

High Energy Physics - Phenomenology;Nuclear Theory