The dressing needs to be blended, so you can either do it in the blender (see step 8) or use
an immersion blender, which is what I did. I used a mason jar: add the egg and egg yolk to the jar. Add the avocado oil, red wine vinegar, and 1 and 1/2 teaspoons salt. Push the immersion blender all the way down to blend the eggs first, and pull it upward as you blend. Keep pulsing and moving up and down until the mixture looks like mayonnaise. (Hint: it is mayonnaise :)