Really fantastic! And honestly if you work on it a little longer you probably have a "full game" on your hands here, it's really satisfying to play! Love the art and presentation, love the gameplay loop.
It's so funny, in the first level I was like "Pfff, too easy!" and then as soon as the second level started, I laughed when I suddenly remembered "oh wait, now I have to pay special close attention to which potion they're ordering or I'll forget!" Such a simple and fun way to make it harder.
Really great work.