1.
Peel and dice the quinces. Boil enough water to cover the quince (about one and a half liters of water), with added sugar and salt. Put the quince into boiling water and boil for a short time (about 10 minutes).
2.
Mix the egg yolk with the flour, add vanilla sugar and milk. Stir to avoid lumps.
3.
When the quince cubes are soft add the mixture to the boiling water, stir and bring to the boil once again. Add sugar or salt if necessary.
4.
Serve lukewarm.
Variations
Instead of flour and vanilla sugar you can use vanilla pudding powder.