"It's my practice to mix the bitter with the sweet," said the doctor, waving the butter-knife.
Always take butter with the butter-knife, and then do not forget to return that knife to the butter-plate.
My mother went to housekeeping with six teaspoons and a butter-knife, and thought herself rich.
Set the butter on two plates, one on either side, with a butter-knife by each.
Always make use of the butter-knife, sugar-spoon and salt-spoon, instead of using your knife, spoon or fingers.
Use the butter-knife, salt-spoon, and sugar-tongs as scrupulously when alone, as if a room full of people were watching you.