Thanks for the feedback!
There is already a book at the bottom left, right under the recipe begin button that logs all of the recipes you have discovered.
Viewing post in Mortiscauld jam comments
Well, with this prototype of a game made in 7 days, you could ponder why certain ingredients could make an epic potion for example, and then from there, remember what items had the best synergy.
But overall, I do get your point and if I could go back in time, I would have added the synergies in the book instead of the whole recipes that can't indicate things directly at the moment.