  We derive the pion-nucleon interaction in the framework of a new perturbative
approach to QCD, based on the use of quark composites as fundamental variables.
The composites with the quantum numbers of the nucleons are assumed as new
integration variables in the Berezin integral which defines the partition
function, while the composites with the quantum numbers of the chiral mesons
are replaced by auxiliary bosonic fields. The action is modified by the
addition of irrelevant operators which provide the kinetic terms for these
composites, and the quark action is treated as a perturbation. The resulting
expansion has the quark confinement built in. To first order we get the
pion-nucleon interaction of the Yukawa model.
