I'm not sure if I already have experienced such a kind of writing. Maybe no. Maybe yes. I've written stories I felt I simply had to write, and if this equals white fire, then so be it. I've written stories that wrote themselves, but those weren't necessarily the ones I had to write. So, if white fire means the urge and the easiness rolled into one, then no. :-) And I think it also means to put everything else aside and live in that storyverse - I didn't dare that so far. But I will, one day. I know that.

Long winded comment is long. LOL.