Alchemist's Log is a diary note that can be collected in Metro Exodus.
Location[]
The Taiga: From the treehouse where you find the Dusty Diary, walk across the rope bridge to the zipline. The said zipline will take you straight to the alchemist's lair. The log will be on his bed.
Transcript[]
The wax idea didn't pay off - the mixture solidifies in the bottle, though it does burn rather well... I need to alter the formula again.
Good thing there's so many bottles left from before the War, those would be impossible to replace! As for the fuel, I'll crack that nut soon. I'm sure!
What if I added some pine resin? That should make the mixture stick...
Resin makes it too thick, it doesn't splash or burn well enough. What if I distill it, like the Teacher explained? Turpentine should work as well as gasoline!
Shit, this hurts... Just my luck standing there when the tank ruptured... Got all face scalded, eyebrows just a memory now.
I got it! Two liters distilled, it burns amazingly well!
It's done! The perfect formula: two parts grease, five parts turpentine, one part wax. It splashes well, sticks perfectly, burns hot and you can't put it out easily. Let Roman try and not make me an instructor now!