Handmade Basic Mayonnaise - cooking recipe

Ingredients

1 egg yolk (room temperature)
1/2 teaspoon Dijon mustard or 1/2 teaspoon dry mustard
1/2 teaspoon salt
1 pinch cayenne pepper
1 tablespoon vinegar
3/4 cup olive oil or 3/4 cup salad oil

Preparation

Put first 5 ingredients in a clean bowl and whisk until blended.
Beat in the oil drop by drop.
As the sauce thickens increase the flow of oil, but be slow and patient. The sauce, when finished will be very thick.
Taste and adjust seasonings, adding salt or vinegar if necessary.