  We consider a natural asymmetric dark matter (ADM) model in the mirror twin
Higgs (MTH). We show that it is possible to obtain the correct dark matter (DM)
abundance when a twin baryon is the DM without the need of explicit breaking of
the MTH $\mathbb{Z}_2$ symmetry in the dimensionless couplings (i.e. without
hard $\mathbb{Z}_2$ breaking). We illustrate how this is possible in a specific
baryogenesis setup, which also leads to ADM. In the simplest scenario we obtain
$m_{\rm DM}\sim O(1)$GeV, just above the proton mass. We show estimates for
direct detection rates at present and future experiments.
