As ice crystals form on the inside wall of the container, you scrape them off and into the liquid with a hand - cranked metal dasher — hence the name scraped - surface heat exchanger. (discovermagazine.com)
My vitamix was just pushing the cashews up against the wall of the container without more liquid. (deliciouslyella.com)
Screw on the extractor blade attachment and blend for 5 seconds, until a dough - like mixture has formed which sticks to the walls of the container. (happyhealthymotivated.com)