Yield:  1 1/2 cups Ingredients: 1 egg, room temperature 1 1/2 cups extra-virgin olive oil 1 teaspoon salt 1/2 teaspoon dry mustard 2 pinches sugar 1 tablespoon sherry vinegar Directions: In a blender, combine egg with 1 teaspoon of oil and salt. Blend at lowest speed. With blender still running, add remaining oil in a slow,...