  We study the structure of a Bose-condensed gas after quenching interactions
to unitarity. Using the method of cumulants, we decompose the evolving gas in
terms of clusters. Within the quantum depletion we observe the emergence of
two-body clusters bound purely by many-body effects, scaling continuously with
the atomic density. As the unitary Bose gas forms, three-body Efimov clusters
are first localized and then sequentially absorbed into the embedded
atom-molecule scattering continuum of the surrounding depletion. These results
motivate future experimental probes of a quenched Bose-condensate during
evolution at unitarity.
