Adrien had been sitting on the floor and going through one of these books when he starting laughing. "Oh, it's just -- I'm reading this book and -- many of these potions sound easy to make, but where would you even get the ingredients? Like, unicorn horn? Demon seed?...".

Val had been putting away ingredients at the other end of the shelf; he looked down at Adrien, amused. "As strange as it sounds, 'unicorn horn' is rather easy to come by", he started. "It is taken to mean that it must come from an animal that has only one horn. Most often, that ingredient is simply a bird's beak".

"A beak?", Adrien repeated. "But -- but that's not even --".

"-- For some special cases", Val continued, "you could use a narwhal's horn". He pointed at one of the bottles that he'd already put on the shelf.

"But the horn of a narwhal is actually a tooth!", Adrien whined.

"That doesn't matter here. Alchemy is a matter of metaphysics and symbolism, not biology", he said as he put another little jar away on the shelf.