It has been found that an excellent way of preventing white fruits from discolouring is by means of sulphur fumes. Take ordinary sulphur and place it on a tin plate or an old iron spoon, then drop a red hot cinder on to it and invert a wide-necked glass jar over it. The jar will become filled with white fumes, when it should be turned up and covered over with a plate or sheet of glass while another is being filled. Take the prepared fruits and drop into the jar with sulphur fumes, and leave for some minutes, then remove and rinse in fresh water or cook for a few seconds in boiling water. Pack into glass jars and sterilise according to directions. As the fruits are peeled and cut they should be put directly into the jar of sulphur fumes.