grease is the word

From time to time I paint my drawing paper with oil.  It is a very sympathetic surface to draw onto and there is much fun to be had with the translucent quality it gives.

It does change a great deal over time though... here's what  a piece of oil soaked paper looks like after nine years:

 

  It's not translucent at all any more but there's some real nice texture to make up for it.  Maybe I could make drawings like whiskey - lock them up for a decade before showing them to anyone...