Hi CF,
Thanks for your reply CF

Hmmmm....if your pan is hot enough, any water (in the base), or that you have added, should evaporate quick sticks!

What SHOULD separate is the oil! I really don't understand how the water will "separate"
If you added too much base/water (or too much at a time), and it didn't evaporate fully, you should just end up with a thinner/runnier sauce (with little oil separation)?

I agree that you don't want to cook the crap out of the meat (nothing worse than dry, overcooked, chicken!

). A few minutes, on full blast, to evaporate any excess water, wouldn't do much harm though?
When the water "separated", did you have it on rice by any chance? Excess water can come from the rice if it isn't drained thoroughly.