Google seems to be testing a new setting icon on recipe search results. I cannot replicate it, but the recipe gear icon shows options for about this result, your preferences, your cookbook, and send feedback.
This was spotted a couple of times by Khushal Bherwani both on desktop and mobile and posted screenshots on Twitter. Here is the desktop screenshot.
You can see, it shows options for:
About this result
Your preferences
Your cookbook
Send feedback
Here are more of his screenshots, including the mobile version:
Forum discussion at Twitter.
