I extracted all ingredients in between picking up required ingredients from Arcane Tower and then giving them to Omeluum in the Myconid Colony. From what I remember, it locked me out and I had to reload.
I might be mistaken, but I think the recipes become available once you have the extract necessary. So if you extract all you should simultaneously unlock a bunch of new recipes. The extracts also go into the alchemy ingredient pouch, so it's not that much clutter either.
but I think the recipes become available once you have the extract necessary.
Yes, you've restated the title of my post.
As far I know, the only way to discover that was to make extracts for recipes I didn't already have, but there was no obvious reason to do that, since I had no recipes that could use them.
(Some people might argue here that making the extracts saves weight. True, but not everyone hoards enough junk to need that small weight reduction.)
Meanwhile, the game offers recipes written down in the world, so it was easy to assume that we're supposed to discover them through exploration.
The system is definitely not intuitive. I stumbled onto it since I didn't find any reason not to extract, but a tutorial tooltip when you loot your first ingredient telling you to extract it to discover what recipes it can be used for would not go amiss.