I have tried for a while now and cant fin d the note or whatever it is that gives the Great Health Potion. I've searched the birds and the boxes every time I go into the caves. I've also checked literally everywhere else too. The chest and tree trunks hoping to find the recipe.
Viewing post in Potion Shop Schwesterherz version 0.31 Patreon release comments
I'm afraid that starting over is necessary then. And yes, it resets the pictures as well.
In the future, people who played version 0.3 will be able to continue playing with that file for upcomming versions.
If it helps, there is a small public cheat to use once to give the player a better start. It provides coins, potions and more. The cheat is: headstart.