If you still didn't made it past the cauldron, here's a hint to continue:
All ingredients have backgrounds, 3 of them have the same, clicking them will move you to the next screen.
Glad you liked the recordings, I didn't even believe it was possible. Recording, cutting and implementing was done in an impossible time frame on the final day, right before I had to go to work because of course it was the same day there was Sunday shopping (Verkaufsoffener Sonntag)