Cut off the edges of the oranges and then cut them into horizontal slices of 2-3 mm and then into 4 pieces

Poor it in a pot with the sugar

Cook it for 40 min at 100*C (stirring occasionally)

Check the consistency and cook for another 15 min

Poor the marmalade straight away in the previously sterilized jars, close the lid and flip them over immediately.

When cooled check that the lid has dropped so it’s preserved.

If not consume the marmelade within 7 days