Train Wisdom (using time)

You give her the hundred gold, and she responds, "very well, let's begin by having you watch my apprentice at work for a few days." "That's it?" "Yes, that's it. Once you get the hang for what she's doing, you can start preparing ingredients and recipes." You sigh, but have already paid the coin. You set yourself to the rather boring task of paying attention to her apprentice. You heed what the apprentice is doing, and take careful note of the methods she uses on the various plants and herbs. After a few days, you begin to notice that she's using very specific methods for some of the plants, and start noticing the minute difference in method. After you successfully learn these, the master speaks up. "Very well then, now you'll prepare ingredients while my apprentice makes the recipes."

Over the next several weeks, you pick up several of the recipes, at least if all the ingredients are there before you. By the time you complete you training, you ability to pick out and discern between details had significantly increased.