In the aftergame battlefields, I finally decided to learn extract level 4 to see what the big deal was about having these holy water bowls. And I made a +8 permanent strength potion using my only holy water. I didn't expect to make such a powerful potion. I thought maybe it would be a +1 or a +3 potion, but a +8 potion? I can see how getting a few of these would have really imbalanced the game in our favor.