This video shows that when homemade mayonnaise fails with an immersion blender, it’s usually due to small details like ingredient temperature or blending technique, not a major mistake. It walks through the simple process and explains common issues – like it staying liquid, separating, getting too thick, or tasting bitter and how to quickly fix each one, often by restarting with a fresh egg or adjusting with a bit of liquid. The main takeaway is that mayo is all about emulsification, and once you understand how it works, you can consistently make and even rescue a batch in seconds.