Matzoon
Take one and a half ounces of prepared matzoon, which you can get at drug stores, and one quart of fresh milk. Stir well and place in a pitcher at a temperature of from 70 to 90 degrees, for from nine to twelve hours, until it begins to thicken like junket; then beat it for ten minutes. Bottle in patent-stoppered bottles, and put on ice. Fresh matzoon may be made from that which you have prepared in this way. You have to buy but one bottle to start with. This quantity makes three bottles, not quite full, as it effervesces like koumiss.