Thermodynamic (in)stability of cold clusterized matter. Green curves represent the properties of clusterized stellar matter with fixed lepton chemical potentials (expressed in MeV) in terms of the baryon chemical potential, μ_B(=μ_n), as a function of baryonic number density, n_B, (left panel) and total pressure, P, (right panel). Magenta curves represent the properties of clusterized baryonic matter with fixed proton chemical potentials (expressed in MeV) in terms of neutron chemical potential, μ_n, as a function of neutron number density, n_n, (left panel) and baryonic pressure, P_B, (right panel). The considered interaction is BBSk1. Here, μ_n and μ_p do not contain rest-mass contributions.