This i found on a site:
How to Make a Poultice
To make one of the following poultices, cut a piece of clean cloth (white cotton, cheesecloth, or unbleached muslin) twice the size of the area you plan on covering. Spread the ingredient on the cloth and fold. Apply the poultice to the affected body part and gently secure it in place with another piece of cloth or an elastic bandage.
A poultice is more effective if it is moist. When it dries out, you should replace it, using fresh ingredients and a new cloth. Applying a hot water bottle or hot compress over the poultice can help keep it moist and warm.
How to make a poultice for common problems:
A blackstrap molasses poultice can be applied to a wart. Keep it on until it dries out or becomes dirty then replace it. In about 2 weeks, the wart should be gone.
Carrot (and Honey)
For a sore throat, prepare a carrot poultice using a large (raw), grated carrot and apply it around your throat.
For weeping sores, make a poultice using a raw, grated carrot or you can cook the carrot and mash it. This will help draw out the infection and stop throbbing pain.
A honey poultice is also effective in disinfecting weeping wounds. Use raw, unprocessed honey.
A chamomile poultice can ease the pain of an earache when placed over the ear. Pour a little hot water over some dried chamomile flowers to soften it before applying it to the cloth.
Soften some dried comfrey root or leaves with hot water. A comfrey poultice can help relieve pain and speed up the healing process of sprains, strains, and pulled tendons and ligaments.
Horseradish (and Onion)
For a toothache, grate some horseradish root to make a poultice and place it behind the ear closest to your aching tooth. You can also apply grated horseradish on the gum next to your aching tooth.
For a sinus headache, apply a poultice made of horseradish to the nape of your neck and to the soles of your feet for one hour. Instead of horseradish, you can use a raw grated onion.
It is said an onion poultice can help eliminate nervous anxiety when applied to both calves for a half an hour.
To relieve arthritis pain, heat some kosher salt in a frying pan to make a poultice and apply it over the affected area.
Potato (Apple, Papaya, and Beets)
For blood shot eyes, peel and grate a potato (preferably a red potato) to make a poultice and apply it to closed eyelids for 20 minutes.
For eye inflammation (including pinkeye), apply a poultice made of grated raw potato, mashed cooked beets, or mashed papaya pulp to closed eyelids for 15 minutes 2 times a day.
For a headache, apply a potato poultice to your forehead for at least an hour. A poultice made of grated apple can also help.
Make a poultice using raw sauerkraut to help soothe and heal a first degree burn