Another one spotted by Aaron Bradley and posted on Google+ was that Google updated the guidelines around recipes markup to say you should use AMP HTML.

The first guideline now listed in the guidelines section, which wasn’t there the day before, reads:

They also changed the recipe properties section to read:

Here are before and after screen shots of both sections.

Old recipes guidelines:

New recipes guidelines:

Old recipe properties:

New recipe properties:

Aaron explained “the obvious TL;DR here is “use AMP”! But Google’s advice is verging on being prescriptive here, although AFAIK AMP is still not actually required to generate recipe rich cards.”

Indeed.

Forum discussion at Google+.