Season 170 - Day 14 of 14

What is the term used to describe a type of recursive or self-referential image that appears within itself in a repeating pattern, creating an illusion of infinity?
It is named after the Dutch brand of cocoa powder that features an image of a nurse holding a tray with a package of cocoa and a cup of cocoa, and within that image is a smaller version of the same image, thus creating an endless loop.
This phenomenon is sometimes also referred to as "mise en abyme,".