It's often silly to spend money purchasing something you can easily produce yourself. Granted, I haven't made my own mayo in years
First got taught to make this using a whisk and a bowl, four hands, and a whole lot of dang work. Then the food processor and blender came along, but someone's gotta clean all those infernal parts.
Now, it's easy:
Charlie Papa Mah-Nez
2 whole eggs
2 T white vinegar
1 T fresh lemon juice
1 T dijon mustard
1 t garlic pepper
1/2 t kosher salt
1/4 t fresh ground black pepper
1/4 t paprika
1/4 t cayenne
1 1/2 c canola oil
put ingredients in order in a tall skinny container/beaker. gently insert immersion/stick blender all the way to bottom, turn on and hold for 10-20 sec until the emulsion starts, then slowly raise to top of beaker. total elapsed time should be about a minute
Make this once and you'll never buy mayo from the store again.
And, you can use it in deluxe's excellent "complicated tartar sauce" recipe.