Is there oil in mushrooms?

Mushrooms are high in vitamin D.   But is there oil in mushrooms?  Is the vitamin D in mushrooms fat soluble or might it be dry? My guess is that the vitamin D in mushrooms is oil based or some of you smart science-y types or medical people would have suggested eating lots of mushrooms.  Can anyone explain this to me?

Mushrooms are low to no fat.  There are all different kinds and generally, 3 oz of shrooms has @2% of the MDR of D.  You would turn into a mushroom before you could eat enough to get in the D you need.  I looked and didn't find much higher than that.  Some of the vegan sites have info on lots of kinds of mushrooms.

Thank you PattyL.  Didn't think there was much oil in mushrooms.  But didn't realize the % of Vit D was so low.  Recently purchased a box of sliced mushrooms - just the plain white ones from the supermarket - and the label plainly said it provided 100% of D.  Didn't think to look at the serving size.  Maybe some truth in advertising problem there?  Of course that wasn't a DS recommended % of D.  But the entire box, about 3 cups, cooked down to ~1/2 cup, so began wondering if the vitamin D might be in a dry form in mushrooms? 

With the understanding that it still wouldn't be near enough vitamin D for a DSer, is it possible to find out if the vitamin D in mushrooms might be dry D? How could that be researched? Does vitamin D naturally occur in dry form in ANY food source?

Just curiosity on my part.

Most of the foods advertised as being high in D are fortified.  The D is added by the manufacturer, it is not naturally occurring.  To the best of my knowledge, there is no natural significant source of dry D.

The highest natural sources of D are fish, fish, and more fish.  With a couple shellfish thrown in for good measure.

The shrooms that are highest are dried ****ake.  Of course the drying would concentrate all the nutrients in the mushroom.  If you reconstitute them, the D would drop.

Thanks for the explanation, PattyL.

Sautéed them, for sure!