Spodomancy

Spodomancy (also known as tephramancy and tephromancy) is a form of divination by examining cinders, soot, or ashes (Greek:σποδός spodós), particularly although not exclusively from a ritual sacrifice. Spodomancy has been practiced by numerous cultures, ancient and modern, across the globe. While many practitioners (particularly in Europe) have performed the ritual as part of a formal system of paranormal, religious, or ceremonial magic, many have done so as part of mere folkloric practice or superstition.