Cook the red lentils for 10 minutes in 4 times their volume of water. Drain and let cool.
Our tip: To cook your red lentils successfully, boil the water in a saucepan, turn off the heat, add your lentils, and cook covered, off the heat, for 15 to 20 minutes. This will help the lentils retain their color and texture.
Meanwhile, wash, peel, and finely dice all the vegetables. Cook them in olive oil. At the end of cooking, add the saffron and red lentils.
For the chorizo sauce, brown the chorizo cut into large cubes. Deglaze with the cream and cook for 20 minutes. Blend in a food processor.
Serve with a fillet of sea bream seared in olive oil.