Which lamp do I take from the peddler?

Hint 1 of 9:

Wait until you (the player, not Alex) sees the bottle that you need.

Hint 2 of 9:

I hope you found a "drink me" bottle on the Isle of Wonder.

Hint 3 of 9:

Try using it -- but save first!

Hint 4 of 9:

You will temporarily "die" if you drink the bottle.

Hint 5 of 9:

Talk to Jollo a few times for a big hint here.

Hint 6 of 9:

Wouldn't it be nice to get the genie off your back?

Hint 7 of 9:

He'll be waiting in the pawn shop once you're ready to use the bottle.

Hint 8 of 9:

Just use the bottle on yourself to trick the genie.

Hint 9 of 9:

Pay close attention to the bottle that the genie enters.