Clean and wash them well, stems and all; cut them in two or four pieces; then place the pieces in a crockery vessel, sprinkling salt on every layer of mushrooms, and leave thus twenty-four hours. Take them out and press them well, so as to take all the juice out, which you bottle at once, and cork. Put the mushrooms back in the vessel, and twenty-four hours after press them again; and again put the juice in bottles, and the mushrooms in the vessel, and repeat this process again after another twenty-four hours. Then mix well together the juice of the three pressings; add to it pepper, allspice, one clove (or more, according to the quantity) broken in pieces; boil the whole, skim off the scum as long as you see any on the surface, and strain. Bottle when cool; put in each bottle two cloves and a pepper-corn, cork air-tight, put in a cool and dry place, and it will keep for years.