How to make
Peel the oranges and cut the inside into cubes. Grate the outer yellow rind of the lemons and peel them. Chop their insides finely.
Place the citrus zests in cold water to boil. Leave for 30 minutes on low heat to boil. Then put the peels in a colander to drain. Combine them with the oranges and half the sugar.
Leave them for 1 night, and the next day, add the remaining sugar. Put the mixture to boil until the standard density for jams is reached, add the grated rind and stir regularly. Remove the foam from time to time during cooking.
Place the jam in dry and slightly warmed jars. Seal them well.