I use the whole Egg in mine it make it lighter/fluffier 1large egg = 2 yokes in any mayo recipe.
I make mine in a Blender I blend the egg with the Acid of choice and other ingredients on high then drop to low and stream slowly at first a few drops at a time up to a thin stream. if it is to thick thin it with a little water.
I never met a Cow that I didn't like with a little Salt & Pepper! Certified PORK-A-HOLIC