This is a great way to use up even the blackest of bananas. It only works well when the bananas are overripe. You can also use any bananas that have been popped in the freezer for later use and to make the cake in speedy time you can squeeze the oranges ahead and put the juice in the freezer...
A beautiful rich green jam, perfect of breakfast on sourdough toast. I keep the quarters of orange in the jam to keep the orange flavour. You can chop it up and add it to the jam.