In a tall, narrow container (such as a mason jar), add 2 raw eggs, 1 teaspoon of salt, 1/2 teaspoon of ground mustard, 1/2 teaspoon of vinegar, 2 tablespoons of lemon juice.
Insert the immersion blender all the way to the bottom of the jar. If using a food processor or blender instead, see notes in the post above!
Start blending on low speed and gradually increase to high speed while slowly pouring in 2 cups of avocado oil.
The mixture will begin to thicken. Keep blending until all of the oil is emulsified and the texture is smooth and creamy.
Taste and adjust seasoning if necessary.
Refrigerate and enjoy! The texture will thicken up a bit after refrigerating and will even more closely resemble store bought mayo! Don't forget to pin this to save for later!