The way it's worded, you should get all recipes that are used in writs, including all basic daily writs as well as all master writs, including the basic Ambrosia recipe and the Orzoga recipe.
My guess is that you just get the basic writ recipes which may be a bit of a timersaver, but isn't really all that valuable overall as you can just buy the ones you need at an NPC.
You almost certainly don't gain ALL recipes as that would include the three war tortes worth 10's of millions combined.