Black currant 1 of fruit to 1 of sugar; 10 minutes Raspberry 1 ” ” 1 ” ½ hour Strawberry 1 ” ” 1 ” 20 minutes Gooseberry 6 ” ” 4 ” 2 hours Red currant 1 ” ” 1 ” 10 minutes Blackberry 1 ” ” ½ ” 1 hour Cherry (stoned) 2 ” ” 1 ” till stiff Keeping Jams.--A not unfrequent cause for their becoming mouldy is that the jars in which jams are kept are sometimes not perfectly dry when the jam is put into them. The jam-pots put away from last year will necessarily be dusty, and require washing; and with thoughtless servants it but too often happens that they will wash the jars the same day the jam is made. They may imagine they have dried them with a cloth, but probably a slight dampness still remains which would be quite sufficient to cause the best-boiled preserve to turn mouldy, even if afterwards kept in a dry place. Have jars washed the day before they are used, have them washed in very hot water, and, after drying with a cloth, have them put down in trayfuls before the kitchen fire, to do away with the possibility of damp. The jars should then be set aside in the kitchen until the next day, covering them with cloths to keep out the dust. For making common jams, such as red and black currants, raspberries, gooseberries (and strawberries when not to be preserved whole), allow ¾ lb. loaf preserving-sugar to every lb. of fruit after it has been picked from the stalk. The fruit must be picked on a dry day, and should be ripe, but not bruised or injured. Set the fruit on the hot plate or fire in a large copper preserving pan, which must, of course, be as bright and clean as possible; let it cook gently, until it is hot through and the juice begins to run out, then add the sugar gradually (this must have been previously crushed, but need not be pounded); keep stirring with a long-handled wooden spoon, when it comes to the boil let it remain boiling for ¾ hour, then try if it will set by putting a few drops on a cold plate, and when this condition is arrived at, pour it off into jars prepared as described. Some jams do not take so long to boil as others, so it is as well to begin to try whether they will set after they have been boiling ½ hour. Many people carefully take off all the scum as it rises, but it is quite unnecessary; if properly boiled, and constantly stirred, it will all disappear before the jam is ready to be poured off, preventing the great waste caused when it is skimmed. Care must be taken to stir constantly during the whole process. After filling the jars, let them stand till next day, when they must be tied down and set in a dry, cool place to keep.