In the central ritual of Zoroastrianism, the Yasna, while the priests are reciting their professions of faith and the hymns of Zarathushtra, thanking God for his blessings, opposing the forces of evil, asking that all people have freedom to follow their consciences (yup, that’s in there too), there’s a few other things they are doing at prescribed points in the liturgy:
taking fresh bread and clarified butter, blessing them, and eating them
pounding ephedra twigs for their sap and mixing it with milk
drinking the ephedra concoction as a stimulant
And I should have said that this … [more]