ingredients with 4 columns, last one is an optional comment for the row
..
method steps with 2 columns, last one is optional comment
..
then optional sections that just have to have:
section title (this is the collapsed title string too)
any rows included until the next .. etc. etc.
plus just a few tricks like if an ingredient comment has [] then it uses that as a URL for the ingredient, if a row in ingredients has just one column then it's a header etc.
