Kacha d'orge perlé (pearl barley porridge)

Instructions

1. Rinse the pearl barley under cold water in a colander until the water runs clear.
2. Soak the barley in the water for 30 minutes, then drain it.
3. Bring the water to the boil in a heavy saucepan, add the barley and salt, then lower the heat.
4. Cook gently, covered, for 30 minutes, stirring from time to time.
5. Finely chop the onion and fry it in the butter until translucent.
6. Add the warm milk to the barley, stir, then continue cooking over very low heat for 15 minutes, stirring often.
7. Stir in the onion and butter, adjust the seasoning, then let it rest for 5 minutes before serving.