When smooth and creamy homemade mayo enters your life, it’s easy to say so long to that jiggly store-bought stuff. And for all that rich flavor, it takes no more than a handful of basic ingredients and a quick whirl with a blender. Even with its simplicity, there are a few important essentials to know before getting started. The upside of making mayo in the blender is that you can skip the arm workout. The machine does all the heavy lifting for you, but there is a catch.