Los ritos sexuales del diablo(1982 Spain)
aka
Black Candles
Hot Fantasies
Naked Dreams
A young woman travels with her partner to England on the unexpected death of her brother. Staying with her sister-in-law, she finds her companion soon drawn into a satanic cult based in the house whose rites seem to centre somewhat on large-scale sexual congress.
Black Candles is easily Jose Larraz's most notorious film and probably his best known after the masterpiece Vampyres. And it's notoriety revolves around one scene where a Satanic coven enacts a bizarre rite involving extracting the reproductive fluid of a goat, symbolizing The Beast, as some kind of nauseating balm to be used in preparing the waif like sister of a murdered man for her role as the bride of Satan. Spanish horror from the 1970s has a very special flavor to it that is somewhat of an acquired taste. It's not for everyone. (IMDB)