I'm sorry bigal! I totally misread that part about the tap and oilburner.
Oilburner - pixel hunt by moving the cursor slowly to the rodlike item on the left (yours) of the apparatus. Use tinderbox on it.
Tap - after the apparatus boils, move the cursor (another pixel hunt) to the right (yours) of the apparatus to what looks like the round flask.
This is where the ingredients where boiled-prepared.
Thanks Yapette - found out the hardway!