Pour oil in hand blender bowl
It's better to use oil without any flavors, but it's your own choice. I prefer to mix 180 ml sunflower oil with 20 ml olive oil.
Add the egg
Add the rest of the supplies. Instead of the mustard you can add your own flavours - chopped garlic, pickles, etc.
Take the blender
Put the hand blender stick in the bowl over the egg and turn on the blender
Check out how fast it's made
This is what you get
Put the mayonnaise in a storage jar, keep it in the frige