In a medium heat pot, add the blood oranges, sugar and enough water to cover the oranges and let simmer for 2 hours.
After 2 hours of simmering the blood oranges should be soft and should start to fall apart. Strain off the liquid, place the oranges in a bowl and use a knife to open them up and check for seeds.
Place the oranges in a blender, skin and all, and blend until smooth. Pass the purée through a sieve to make it extra smooth.
Once passed, add a good splash of oil and seasoning.
The purée should be quite bitter but with a hint of sweetness.
Keep it at room temperature and warm it again when needed.Recipe reprinted with permission of Nestlé® Professional.