These are built in [LaTeX](https://www.latex-project.org/) (pronounced 'lay-teck' or 'lah-teck'; the choice is [yours](https://www.latex-project.org/about/)), so if you aren't familiar with that language, you may not realize what you are looking at. Never fear! The pdf version of each recipe is inside the "build" directory.
I took the picture of the sliced jalapeño pepper. The full sized version is available [in my gallery](http://gallery.kjodle.net/picture.php?/384/category/39).