This recipe is taken from paleogrubs.com
Directions for the Paleo Mayo Recipe:
1 EGG, room temperature
2 TBS lemon juice or apple cider vinegar
1/2 tsp of salt
1/2 tsp of dry mustard
1 cup light olive oil (avocado, almond and walnut oil also works well)
In a bowl (if using an immersion blender) or a blender, place the egg and lemon juice, letting them come to room temperature. Than add salt and mustard…blend the ingredients.
While blending, very slowly add the oil…this step is key if you want the consistency of mayo. I find that it is messy to use an immersion blender.
You can buy a large bottle very inexpensive at costco.