At least a couple of the skilled master recipes that are taught cannot be recorded into a recipe tome immediately upon learning it. This is the most recent example:

>Hrinde calls for an apprentice who arrives shortly with a black training cauldron and quickly leaves.

Hrinde asks, "Why don't I teach you how to make a minor mana regen potion, hmm?" He takes you aside and instructs you on the proper method of making a minor mana regen potion.

The recipe given is as follows: add water, add ayana leaf, add 2 doses of ground tkaro root, simmer, add s'ayanad crystal and add glimmering blue mote of essence.

Hrinde says, "With that out of the way, let us practice what you've already learned, shall we? First, try a recipe with SIMMER as a component."

>get tome
You remove a leather tome from in your gold silk cloak.
>write tome
You quickly jot down the recipe for a tincture of aloeas in your leather tome.
>write tome
>You think for a moment, but there isn't a recipe fresh in your mind.