So, I decided to try making homemade mayonnaise. Guess what? It's EASY! Who knew?!?
Anyhoo...I used Alton Brown's recipe exactly as written (<click link for the recipe). There are many variations of homemade mayo, but the one factor they all have in common is to add the oil S-L-O-W-L-Y in the beginning, like drop by drop. You'll see it in the instructions.