Old Fashioned Orange Marmalade

Remove all the white pith from the oranges. Slice the oranges very thin and place in a bowl or plastic container. Slice the lemons and add to the container. Cover the citrus with the water and place in the refrigerator for 24 hours.

Transfer the water and fruit to a Dutch oven or other large pan. Bring the liquid to a boil then reduce the heat to a strong simmer. Cook for 3 hours, uncovered.

Add the sugar to the Dutch oven and mix well. Return the mixture to a simmer and let cook for 1 more hour or until the marmalade is thick.

Pour into sterile jars and seal.