A month ago I foolishly left a pot of water on to boil WAY too long.  It was a small pot and all the water was gone (though it had been covered) and it continued to sit on the stove burner with the flame on until I remembered much later on. When I realized, I let it cool down and heard crackling as it did (which I'm told was the sediment deposition on the bottom).  The pot (All-Clad, stainless steel) was discolored (though looked kind of cool) and with some advice from here and other sites, I cleaned it as best I could (white vinegar, barkeeper's, dishwasher).  The pot still looks discolored but has worked fine, though the water appeared to boil strangely at times (with unusual bubble patterns that hadn't been there before), but no big deal. I only use the small pot for boiling water.  But today, about a month after this happened, I put about half a cup of hot water from the faucet in it and i heard a loud pop.  Thinking this unusual, I thought maybe I misheard and I heated up the water as normal.  Then I heard a few more (but softer) pops.  Finally, the water was boiled, I took the pot off the flame, and left it to cool on a cold burner.  POP another strong one! My thinking/hope was that the pot was ok because it's stainless steel and based on what I've read, permanent damage was unlikely after my initial over-heating incident.  But I have no explanation (nor can find one) about this new popping, long after this happened.  And I'm worried that the pot might split or shatter, or that it might be dangerous in another way. Any information or advice? Thanks! 
No. An edible organic liquid that does not dissolve in water, almost by definition, is an oil. That's not the important thing, though. Substances like mineral oil are edible yet non-nutritive; they pass through the body unchanged and would be compatible with any dietary condition. The problem is that, because they are not digestible and not water-soluble, they, ah... lubricate things. Down there. The amount you'd have to use for puff pastry would cause some real digestive issues. Bottom line: there are no straightforward non-nutritive substitutes for fats and oils which do not cause diarrhea or loose stools. 