Start by removing the papery covers from the Cape Gooseberries. Wash them and then halve each fruit. If you want to make jam, you can run the fruit in the blender and then make the jam.

Put the halved fruit, the orange juice and the water in a thick walled pan. Bring to a boil and then turn down the heat. Stir occasionally and let the fruit cook till it is soft. Add a little more juice or water if you feel it is required to cook the fruit.

Add the suagr and vanilla to the cooked fruit. Stir to dissolve the sugar and cook till the fruit mixture thickens and reaches a jam like consistency. Turn off the heat. Stir in the butter and let the preserve cool down.

Transfer to a strile glass jar and cover with airtight lid. Refrigerate if necessary.