Kiwi jam

Peel the kiwis and cut them into cubes. Put them in a heavy-bottomed stainless steel saucepan. Add the sugar and mix well. Cover and leave to rest overnight in the refrigerator. After this time, add the lemon juice and place over heat. Bring to a boil, then cook over medium heat, stirring often for about 30-40 minutes. Pour the hot jam into sterilised, dry jars. Seal them tightly and turn them upside down until completely cooled.