overfired

Fired at a high (or excessively high) temperature.

At this point overfiring begins, as is shown particularly by the volume curve, which indicates decided bloating, so that at 1450°C the clay has about the same volume it had at 1050°C before vitrification took place. At 1450°C it is, therefore, decidedly overfired. However, its excellent burning behavior is apparent from the long temperature range.

A large percentage of all Late Horizon fragments at this site was overfired, to the point where many were vitrified, black to dark brown, and misshapen, some with blistered surfaces. This observation leads me to conclude that these fragments probably formed the discards from a pottery workshop, since overfired fragments of this kind are very rare in other refuse sites.

Of a cooker: having a heat source that is above the food being cooked.

Overfired grills, or salamanders, can, in addition, be used for making toast and salamandering. They have the heat source above the food [...]. This may comprise sets of burners firing below refractory or metal frets, or surface combustion plaques.

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