Mustum, sweet wine newly pressed from the grape; or the new liquor pressed from the fruit before it has worked or fermented. See Wine.

Must of Rhenish wine. This is a liquor that, though drank by some, is found extremely to affect the brain; for not having passed the natural effervescence which it would have been subject to, in the making of wine, its salts are locked up till the heat of the stomach setting them to work, they raise their effervescence there, and send up abundance of subtile vapours to the brain. The Rhenish must is of two kinds, being made either with or without boiling. That made without boiling is only put up so close in the vessel that it cannot work; this is called flumm-wine. That by boiling is thus prepared: they take strong vessels not quite filled, and putting them into a cellar, they make a fire mild at first, but increased by degrees, and afterwards they gradually lessen it again, that the boiling may cease of itself. This operation is finished in 36 or 40 hours, according to the size of the vessel; and the wine-boilers, instead of common candles, which would melt by the heat, use thin pieces of split beech-wood. These also serve for a double purpose, not only lighting them, but giving them notice of the boiling being enough; before that time, the quantity of vapours thrown up make them burn dim; but as soon as it is finished, the vapours ascend in less quantity, and the lights burn brisk and clear. About seven or eight days after this boiling, the must begins to work, and after this working it is called wine. They have also another kind of Rhenish must which is thus prepared: they boil the liquor to half the quantity, and put into it the medicinal ingredients they are most fond of; such as orange-peel, elecampane-root, and juniperberries, or the like; being thus medicated, the whole works much more slowly than it otherwise would. If the boiled must by too violent an effervescence cast out its lees, it will on this become vapid and dead, unless this separation is stopped by some fatty substance. MUS

Muscat, stance, such as fresh butter or the like; they put this in upon a vine leaf, or else apply hard to the mouth of the vessel.

A musk for artificial wine may be thus made: Take 20 pounds of fine sugar, five gallons of water, four ounces of white tartar finely pulverized, or cream of tartar, and boil them in a large vessel over a gentle fire.