Cabbage
Salt

Slice cabbage very thin. Pack tightly in canning jars. Add 2 teaspoons salt per jar. Pour boiling water to brim. Wipe off rim of jar, put on lids and rings and tighten. Let sit for 4 weeks until they are done working - you see no more bubbles forming. Take off lids and rings, wash well and replace on jars. Process in hot water bath for 35 minutes.