To Make A Mustard Plaster
April 29th, 2017
If you wish it to produce irritation immediately, mix some flour and water together quite stiff, spread this on your cloth and then sprinkle dry mustard on it quite thick, place a thin cloth over this and dampen with hot water. If you do not wish to raise a blister, mix the mustard up with the white of an egg and a little water. A poultice made in this way may be kept on an indefinite time without raising a blister.
Source: The Housekeeper’s Friend: A Practical Cookbook
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