Mayonnaise

 I personally feel that there's nothing better than Hellman's Mayo, I will venture to say that home made mayo is the all time best. 

"Place 2 egg yolks in bowl with 1/2 teaspoon English mustard, a pinch of salt, and 1/2 teaspoon red pepper. Stir well for 3 minutes. Pour in a drop at a time, 1 and 1/2 cups olive oil. If it becomes thick, add vinegar a little at a time.