I don't know how to do the spoiler code. That would be a nice addition to this thread as well. I will edit it if someone teaches me how.
As to my question, I would like to know is there a way to learn all the recipes, or is it just trial and error?
I was trying to find verification, My Summoners and Necromancers often encounter the Atronach Forge Recipes in Loot, but not until after getting the specific item.
Apocrypha tends to be the more frequent supplier of Recipes.
There are 31 Recipes, but this number includes the Recipes in the Atronach Forge Manual. Recipes in Daedric script (that require translating manuallly) require the specific item.
The UESP has a list of every Recipe.
A spoiler tag is made by [xxspoilerxx] what You want in the spoiler[/xxspoilerxx], except without the xx's
I moved this to the correct forum, I would have hoped that the pinned note at the top of the General forum saying "DO NOT POST SPOILERS IN THIS BOARD" would have been enough - obviously I was mistaken.