1 kg oranges/sweet lime
1¼th kg sugar
1 litre water
1-2 lemon- extract their juice.
Thinly slice the oranges with their skins.
Boil them in the water to soften the skin. And till the water is absorbed. This will take about 15-20 minutes.
Turn off the heat and add the sugar while still hot. Leave to soak overnight.
Add the lemon juice. Boil again for 10 minutes to thicken.
Now do the plate test to check the setting point.
To do this put a few drops of the mix on a chilled plate. Keep in the fridge for a minute. Now push the jam with a finger. If the surface wrinkles, it is done. (Note that the mix will be syrupy under the surface.)
Pour the hot mix into sterilized bottles. Seal.