I prefer to use a stick blender when making mayonnaise. So easy! Use in Buttermilk Salad Dressing (recipe below) or any time you would use mayonnaise.
The first time I made my own mayo (following the recipe from Nourishing Traditions), I whipped it together in my food processor. The heat from the friction of the blades caused the olive oil to go rancid -- and the result was bitter enough to be unpalatable. Ever since switching to a stick blender, I haven't had any problems.
Homemade Mayonnaise