Peel the peel of the oranges and place in a large saucepan. Remove the white skin and the white stalk in the middle of the oranges. Cut the oranges into cubes and add them to the pot as well. Then puree everything finely. Add the orange juice and lemon juice, stir and heat slowly. Add the vanilla sugar and the preserving sugar and stir everything well after each package so that the sugar dissolves. Let the mixture boil for 5 minutes.
Take the saucepan off the stove and skim off the foam. Do not throw away the foam, it can also be used as a spread. Then fill the jam into jam jars and immediately turn upside down for 10 minutes. Then turn the glasses over again and let them cool down.
The jam tastes like the sun in a glass from the darkest Peru.