Orange Marmalade Ê Boil until tender 6 medium oranges (discard white membrane, if desired) 1 large lemon Ê Quarter, remove seeds, core, slice, measure fruit and juice and add: Double amount water Equal amount of sugar (cup per cup) Ê Cook rapidly, stirring occasionally until foam canÕt be stirred down, and Syrup wonÕt run on Saucer.Ê Do jelly test. Pour into sterilized jars and seal. Ê JELLY TEST Insert a thermometer into center of jam or jelly. When 9 degrees above a boiling point, it is done. Pour a little syrup onto a cold plate and place in refrigerator for 1 minute. If mixture jells, it is done. Ê