  We compute a new equation of state table including Bose-Einstein condensate
of $K^{-}$ mesons for core collapse supernova and neutron star merger
simulations. Nuclei and interacting nucleons in non-uniform matter is described
in an extended version of the nuclear statistical equilibrium model including
excluded volume effects whereas the uniform matter at higher densities is
treated in the relativistic hadron field theory with density dependent
couplings. The equation of state table is generated for a wide range of density
($10^{-12}$ to $\sim 1$ fm$^{-3}$), positive charge fraction (0.01 to 0.60) and
temperature (0.1 to 158.48 MeV). The impact of antikaon condensate is
investigated on different thermodynamic quantities for example free energy per
baryon, entropy per baryon, pressure as well as compositions of matter.
Furthermore, critical temperatures of antikaon condensation and the phase
diagram of matter are also studied in this article.
