Combine the avocado and olive oil in a measuring cup and set aside.
Using a large measuring cup, combine the garlic, egg yolk, lemon juice, zest, salt, and pepper.
Slowly pour the oil mixture into the measuring cup while blending with a handheld immersion blender. Blend for 3-6 minutes, moving the immersion blender up and down until the mixture looks like mayo.
Season further to taste and serve as a dip with vegetables, or a spread on sandwiches or proteins.
Notes
Raw egg is not recommended for babies, pregnant women, or those who are immunocompromised. If you're uncomfortable with raw eggs, you can opt for pasteurized eggs. Raw eggs risk food-borne illness.All nutritional information are estimations and will vary. Estimations do not include optional ingredients.