The Black Mass is not a single ancient Satanic ceremony. The idea developed largely through Christian accusations and later European literature describing an imagined inversion of the Mass.
In historical accounts, the ceremony was portrayed as a deliberate reversal of Christian worship: sacred prayers could be altered, religious objects profaned, and the Eucharist treated as an object of mockery or inversion.
Later occult and Satanic movements adopted the image in different ways. Some treated it as theatrical ritual, some as an anti-Christian statement, and some as psychological or symbolic ceremony.
The familiar image of bread, wine, altar, candles, ceremony, and inverted Christian symbolism therefore comes primarily from this history of ritual inversion rather than from a standardized Satanic cookbook.