Hi all,
Well I've got to Zanthia's house completed all the potions, have mixed the potions to get a purple and orange one. So far so good right. Now I can't get the grail. So according to all walkthroughs I' m supposed to get a blue gem in my amulet. Don't have it. I go to pipsqueek's house and he isn't there. I can't figure out what I missed. Since I'm supposed to have a blue gem in my amulet I obviously missed something.

Anyone know?

Trying to give you a hint without spoiling the puzzle element :)

You'll need an empty flask to fill up with something in your immediate vicinity :)