In accordance with the Higgs mechanism of mass generation, quantum particles get a mass due to its interaction with a constant background classical field responsible for spontaneous symmetry breaking. It is treated as a Higgs vacuum, but not a familiar quantum particle – a Higgs boson. The physical origin of such a Higgs vacuum is unclear. For instance, one thinks of it as being sue generis a condensate by analogy with a condensate of Cooper pairs in superconductivity. What then has been discovered?