In Medieval Times, foot roasting was a popular way to extract a confession or punish a criminal of minor crimes.
The victim's feet were imprisoned in the stocks (see picture) and then red-hot coal was placed right under them. When the subject was interrogated, a screen was put between the heat and his feat, acting as relief. If he refused to confess, his bare feet were exposed to the flames.
The torture progressed until the victim's feet were charred to the bone. When this occurred, the phalanges and other bones fell as the feet were completely burned. This very rarely resulted in death, but if the victim refused to confess, he could be subject to other tortures.