# Origin of the quark condensate VEV

Consider the QCD lagrangian :

$$L_{QCD}=-\frac{1}{4}G^a_{\mu\nu}G^{a\mu\nu}+\sum\bar{\psi}_q(i\not{D}-m_q)\psi_q$$

Textbooks explain that this lagrangian is spontaneously broken by the VEV of quark condensates. But where is the potential that gives rise to this VEV ? In electroweak symmetry breaking, the potential is supplied by the Higgs field. In QCD, does the VEV of quark condensates originate in the minimal lagrangian ?