Hey, cool game! Really much effort put into the pixel art. I think it is a bit too hard, trying to find out what potion each customer needs with trial and error. Maybe make the hint so it tells you multiple ingredients after a while. Also I would add a functionality when you click on something in the book, it redirects you to how this something is created. I think those two suggestions would greatly improve the fun players have. Other than that, really cool game base idea. You could make something big out of this :D. I'd appreciate if you also checked out my submission ;)