Very cool idea! It was pretty intuitive, the interactions felt responsive, and I enjoyed experimenting in my cauldron. The creative direction also feels cohesive and fits the theme well, it definitely gives off medieval alchemy vibes!
The only thing I didn't understand was what triggered the contents of the cauldron to be turned into gold, was it supposed to be tied to the day and night cycle? If so, that didn't seem to trigger in the second round I played. My first round ended quite quickly, but the second round felt like it went on for too long, I would've liked it if my cauldron reset more frequently. I also didn't like that the combinations I'd unlocked disappeared from the scroll when restarting, it would be nice to be able keep the knowledge that you've gained from previous play throughs.
Overall, I did find it pretty engaging, and I could see this working as a longer game, but I think it would require more possible combinations to experiment with to keep it interesting.