Store the sourdough ferment in two containers. Use a bigger container for the bit you want to use now, cover it with a piece of woollen cloth and keep it in a warm place so that the fermentation process can continue properly, Store the rest of the ferment in a smaller container and in a cold place in order to slow down the fermentation process.
Homemade sourdough ferment is twice as potent as the one used in bakeries which is why it should always be your first choice.
Sourdough ferment poultices are very good for treating headaches, bruises, boils, etc. Before placing the ferment on the skin, put it in a little bag of very thin cotton cloth and spread it in a layer that is half a centimetre thick. This is done in order to prevent it from sticking to the hairs on the skin. You can also massage the spot where you would like to place the poultice with some olive oil. The easiest way to remove the dry bit of ferment from the bag is by soaking it for half a minute in cold water.
You can use the same bit of ferment a second time and in order to do this, add some warm water and an equal amount of flour, mix it all together and let it ferment once again.
If the ferment is to be taken internally, a fresh batchof it should be prepared every time.
Horseradish, Flour, Salt and Vinegar Poultice
This poultice is very potent and especially helpful for treating bruises, chronic rheumatism, gout, low back pain (LBP), etc.
Method: depending on how big the area you need the poultice for is, take one or two medium-sizedhorseradish roots, grind them finely and immediately afterwards mix in equal parts wholemeal (or regular) flour and salt and as much vinegar as you need to make a thick paste. Spread the paste in a layer about 0.5/1 centimetres thickinside a thin bag that is large enough to cover the troubled spot. Keep the poultice in place for 1-2 hours if the patient is a child, for 2 to 5 hours if the patient is an adult and for 6 to 8 hours if the patient is willing to leave it on for so long. After removing the poultice, soothe the skin by placing a milk poultice with izvara (curds) or a simple poultice soaked in a lukewarm infusion of red clover (Trifolium pratense) on the spot. The horseradish poultice can be used once every 3-10 days (that is, only when the redness on the skin has disappeared).
Onion and Salt Poultice
Take three tablespoons of finely chopped onion, a tablespoon of table salt and some corn flour. Mix everything together with some warm water to make a thick paste and use as a lukewarm poultice.