Vetch (fodder peas) and duck

Essence.
It is similar in strength to lentils, but is more difficult to digest.

Nature.
Balanced, leaning towards dryness.

Actions and properties.
Astringent like lentils; produces black bile.

Tools with joints.
Vetch is good for joints. It is used to make medicinal dressings for hydrocele and hernia in children.

Eruption organs.
Strengthens the stomach.

Nature.
Hot, hotter than any poultry. Some say that duck warms a person with a cold nature and causes a fever in a person with a hot nature.

Actions and properties.
Its fat remarkably soothes pain and moderates the burning sensation in the depths of the body. Duck fat is the best poultry fat. Duck meat calms the winds, and its navel is very nutritious.

Cosmetics.
Duck fat clears the complexion and plumps the meat.

Respiratory and chest organs.
Duck fat clears your voice.

Nutritional organs.
Duck meat is slowly digested in the stomach and is heavy, but goose meat is especially difficult. The easiest and best part of a duck is the wings. If the meat of these birds is well digested, it is more nutritious than the meat of all other birds.

Eruption organs.
Excites lust and increases the amount of semen.