  We consider multi-edge or banana graphs $b_n$ on $n$ internal edges $e_i$
with different masses $m_i$. We focus on the cut banana graphs
$\Im(\Phi_R(b_n))$ from which the full result $\Phi_R(b_n)$ can be derived
through dispersion. We give a recursive definition of $\Im(\Phi_R(b_n))$
through iterated integrals. We discuss the structure of this iterated integral
in detail. A discussion of accompanying differential equations, of monodromy
and of a basis of master integrals is included.
