The following directions may appear trite and common, but it is of the greatest consequence that they be strictly observed:
Attend to minute cleanliness. Never wipe a dish, bowl, or pan, with a half dirty napkin, or give the vessel a mere rinse in water and think that it is then fit for use. See that it be dried and pure from all smell before you put in any ingredient.
Never use the hands when it is possible to avoid it;... more...