To Render Butter

Any butter that is unfit for table use may be made sweet and good for cooking purposes and will last for months, if prepared in the following manner: Place the butter in a deep, iron kettle, filling only half full to prevent boiling over. Set it on the fire where it will simmer slowly for several hours. Watch carefully that it does not boil over, and when the fat is clear, and the sediment at the bottom is just browning, take it from the fire gently, so as not to disturb the sediment. Let cool a little, strain through cloth into crock, cover, and keep in a cool place.