This soup is at the heart of French cooking.
It is made in homes and brasseries right across France and loved by all. You will need some really good onions, like the white ones from Provence or your local farmer’s supply. Being from Franche-Comté, I think this dish tastes best when the croûtons are made with the famous Comté cheese.
The combination of rich, golden cheese melting into the tangy, glistening onions makes it second to none.