[insonable]

simple like:

title

subtitle

.. [two blank lines make a section break]

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.