  We put forward the idea that the quark-gluon plasma might exist way below the
usual confinement temperature $T_c$. Our argument rests on the possibility that
the plasma produced in heavy-ion collisions could reach a transient
quasi-equilibrium with `over-occupied' gluon density, as advocated by Blaizot
et al. Taking further into account that gluons acquire an effective mass by
interaction effects, they can have a positive chemical potential and therefore
behave similarly to non-relativistic bosons. Relevant properties of this dense
state of interacting gluons, which we dub serried glue, can then be inferred on
rather general grounds from Maxwell's relation.
