Mike,

McKenna's 'Food of the Gods' makes the same claim as does 'The Sacred Mushroom and the Cross'.

Some have the early Christian sect of the Manicheans creating a eucharist out of some pretty interesting stuff.

"Starting from his De haeresibus 46,9-10, the present article examines Augustine's contention that, among the Manichaeans, there was a certain ceremony in which human semen (i.e., sperma and menstrual fluid) was collected and consumed during a eucharistic rite."

See:

https://repository.up.ac.za/bitstream/handle/2263/52491/VanOort_Human_2016.pdf?sequence=1&isAllowed=y#:~:text=Starting%20from%20his%20De%20haeresibus,consumed%20during%20a%20eucharistic%20rite.