Temperature slices of merger remnants at the end of the simulation (6000 s) through the mid-plane. The equal-mass merger (left panel) is significantly colder and further away from ignition. We argue that it will likely eventually start helium burning in the centre, after compressing and heating up. The unequal-mass merger remnant (right panel) has already heated up a lot in a shell around its cold core, and will more likely ignite helium burning there first.