This is another recipe where I don't really measure, it's more about looks, taste and consistency.
Today I used:
12 hard boiled eggs shelled, cut in half and the yolks removed into separate bowl.
1 tsp vinegar
1/3 C mayonnaise - approximately
1 1/2 tsp prepared mustard
Dash of onion powder
Mix yolks and all the other ingredients until you have reached your desired consistency (peanut butter) and spoon back into egg white halves. Sprinkle with paprika. Refrigerate until served.