I run the tap on a dribble, add small amounts of water at a time and give it a good stir (into a paste). Then keep adding water and stirring until its about the consistency of milk. I then microwave it for 2 minutes (stir half way through). I never put in as much water as they recommend as you're right its too watery. If its too thick when it comes out the microwave I just add a drop more water. Sorry I can't give exact measurements, I just wing-it slightly x