  We present a quantitative analysis of chiral symmetry breaking in two-flavour
continuum QCD in the quenched limit. The theory is set-up at perturbative
momenta, where asymptotic freedom leads to precise results. The evolution of
QCD towards the hadronic phase is achieved by means of dynamical hadronisation
in the non-perturbative functional renormalisation group approach. We use a
vertex expansion scheme based on gauge-invariant operators and discuss its
convergence properties and the remaining systematic errors. In particular we
present results for the quark propagator, the full tensor structure and
momentum dependence of the quark-gluon vertex, and the four-fermi scatterings.
