Wash the beets and boil them until they are nearly tender and the skins come off easily. Remove the skins and carefully pack the beets in a jar. Cover with boiling water, to which one tablespoonful of salt is added for each quart, and put the cover on the jar, but do not fasten it down. Place the jar on a rack or a folded cloth in a large kettle that can be closely covered. Pour enough water into the kettle to reach within two inches of the top of the jar, cover the kettle, bring the water to the boiling-point, and boil from one and one-half to two hours. As the water around the jar boils down, replenish with boiling water, never with cold. Remove the jars and tighten the covers. Invert to cool, and test the joints. Wrap the jars in paper to prevent bleaching; then store.
Note. In canning beets, if vinegar is added to the water in the proportion of one part vinegar to four parts water, the natural bright colour will be retained.