To pickle Mushrooms.
Take a sufficient quantity of double distilled white wine vinegar to cover the mushrooms; add to it whole white pepper, ginger, mace, peeled eschallots, and a small quantity of garlick if approved; boil all together ten minutes and let it stand till cold. Then peel fresh forced[247] button mushrooms into water, wash them clean, strain, and put them into a stewpan. To a quart of mushrooms add the juice of a lemon and a table spoonful of salt. Cover the pan close, set it over a fire, and when the liquor is sufficiently drawn from the mushrooms put the whole into glasses and cover them with the pickle. Tie bladder and white leather over the glasses.
The general rule has been deviated from of making the pickle for onions and mushrooms with double distilled white wine vinegar, as in this instance it is requisite to preserve them white. It is likewise recommended that they be put into small jars or glasses for use; for this reason, that, if exposed to the air but for a short space of time, they will discolour.