Hummm, well that sounds gross doesn't it? ....but it tastes great - really.
I see hers has water too and mine doesn't. Hers says 2 layers, mine says 3. (I've always made it as a 3-layer.)
Maybe it's moisture? Denseness? It's really moist.
Clearly I have no idea. (I know, not helpful.) However, I've been asked for the recipe several times.