Disgust as Buddhist practice

"Eating and drinking supposedly-disgusting things was a main practice of early Buddhist Tantra. The essence of its primary ritual—ganachakra—was drinking a sacred mixture of semen and menstrual blood. (See Ronald Davidson’s Indian Esoteric Buddhism and David Gordon White’s Kiss of the Yogini.) Other disgusting substances were also consumed. Recognizing all reality as sacred, as inherently pure, was not the only point of this practice—but it was a significant one."

http://buddhism-for-vampires.com/disgust-as-buddhist-practice