Okay, so I know the locations of all the herbs for the stews, and I have the cauldron... However, I can't seem to figure out how to get them to grab the herbs to put in the cauldron... Do they have to be master or adept healers in order to do so, or am I doing something wrong?

Not entirely sure if any of this is a spoiler, so I've put parts of my post in 'invisible' text. *highlight to read*

You need to place a villager on the cauldron to start to prepare the stew first.

Also, you'll need to get a villager to add water and food to it.

Be sure the cauldron is on the fire!
Then (spoiler) place a villager on each of the 3 herbs you want (end of spoiler)

It can be done by several villagers, each villager on one task!

Thank you guys! =] Happy playing ^_^