Barm—Australian. (Mrs. Penrose Rogers, Falmouth. 1881.)
In 2 qts. of cold water put ½ oz. of hops tied up in a muslin bag, with 6 good-sized peeled potatoes. Boil all together until quite soft, then mash through a colander, pouring them and the liquor on 1 teacupful of moist sugar, and a small teaspoonful of salt. When tolerably hot, add 'a teacupful old barm—of the same sort if possible, cover, and it will be fit for use in 6 hours.
The bottle or jar in which the barm is kept must not be corked for some hours, and then only loosely, or the bottle will burst.