Since the beets are fully cooked before putting in the jars , you would need to add a tsp. of salt to a quart and fill with the juice and water from the beets and put the jars in a water bath and cook for about 15 minutes or so to make them seal. Check with a canning book and get the right amount of time. It should work the same as for tomato juice or pickled beets that is fully cooked before putting into the jars.