Starting with the egg, put all ingredients into a wide mouth jar (or container that's exactly as wide as your stick blender).

Let sit for 20 seconds to be sure the egg is settled at the bottom.

Place stick blender in a jar so that it touches the bottom. The egg should be covered by the blender blades.

Turn blender on and don't move it for 10-20 seconds until the egg begins to emulsify.

Slowly, raise the blender up to emulsify the remaining oil.

Store in the refrigerator.