In "Spring Outbreak Pt 2", Salvadore cooks risotto for Alyssa, and its implied included in the food the same potion the Knights brewed earlier in the season to prevent their memories being tampered with by the Order in the future (the presence of Acheron's Cauldron, a necessary vessel for that potion, and that Alyssa shrugs off the Order's memory powder at the end of the episode). Yet Lilith, after brewing the potion, made a big deal that it had to be taken all at once "or else your brain will shrivel up to the size of a raisin." Well, in the very same episode, Praxis is shown to be adept at customizing spells, with Professor Foley changing two different incantations to spread a magical blood parasite through the Temple. So Salvadore's memory potion is a modified version, that doesn't have to be taken all at once and can be baked into something else.
