The cleaning of Mushrooms, or preparing them for any of the above Uses, will afford us nothing but what is useful; the Parings should be saved by themselves, to be wash'd, towards the making of what is called Mushroom Gravey; the Gills must be saved by themselves for making either Ketchup, or Mushroom-Gravey; and the Parts towards the Roots, and the Roots themselves, must be kept to dry in the Sun, or a warm Room, to raise Mushrooms from, especially if they are of a large good sort that has red Gills, for those which have white Gills, prove oftentimes unwholesome, and are apt to turn yellow when they are cut and put in Water: however, some People eat of this sort, and I have eaten of such a sort myself; but as there are some with white Gills that are deadly, it is dangerous for unskilful Persons to meddle with any of that fort: and therefore I thought it convenient when I was in _France_, to learn the Method of raising them in Beds, that we might be sure of our sort, and have them all the Year about: The Method of doing which, is in my _Appendix_ to my _New Improvements of Planting and Gardening_, printed for Mr. _Mears_, at _Temple-Bar_. The following Receipts for making of Mushroom-Ketchup, and Mushroom-Gravey, I had from a Gentleman named _Garneau_, whom I met at _Brussels_, and by Experience find them to be very good. To make Mushroom Ketchup. Take the Gills of large Mushrooms, such as are spread quite open, put them into a Skellet of Bell-Metal, or a Vessel of Earthen-Ware glazed, and set them over a gentle Fire till they begin to change into Water; and then frequently stirring them till there is as much Liquor come out of them as can be expected, pressing them often with a Spoon against the side of the Vessel; then strain off the Liquor, and put to every Quart of it about eighty Cloves, if they are fresh and good, or half as many more, if they are dry, or have been kept a long time, and about a Drachm of Mace: add to this about a Pint of strong red _Port_ Wine that has not been adulterated, and boil them all together till you judge that every Quart has lost about a fourth Part or half a Pint; then pass it thro' a Sieve, and let it stand to cool, and when it is quite cold, bottle it up in dry Bottles of Pints or Half-Pints, and cork them close, for it is the surest way to keep these kind of Liquors in such small quantities as may be used quickly, when they come to be exposed to the Air, for fear of growing mouldy: _but I have had a Bottle of this sort of Ketchup, that has been open'd and set by for above a, Year, that has not received the least Damage_; and some Acquaintance of mine have made of the same sort, and have kept it in Quart-Botles to use as occasion required, and have kept it good much longer than I have done. A little of it is very rich in any Sauce, and especially when Gravey is wanting: Therefore it may be of service to Travellers, who too frequently