Add some of the milk mixture to the eggs and whisk together.
Whisk together and add the olive oil a little at a time, to make mayonnaise.
Place vinegar and olive oil in a large bowl; whisk together.
Add the flour mixture to the wet ingredients and quickly whisk together.
Whisk together vinegar, oil and mustard in a serving bowl.
Pour a little of the mixture into the eggs and whisk together.
Whisk together first 5 ingredients (through pepper) in a small bowl until smooth.
Whisk together over the heat until the sauce has thickened and is smooth.
Meanwhile, for the dressing, whisk together all the ingredients in a bowl until well combined.
In a cup or small bowl, mix the coffee with the hot water, then add the egg and whisk together.