Shell the beans at the last minute. Plunge them into a large saucepan of boiling water, salted with 7g (¼oz) salt per litre (1¾ pints) water, and skim. Add the onion stuck with a clove, the carrot and the bouquet garni and cook for 30 minutes.
Chop the shallots and soften them in a casserole with 40 g (1½ oz) butter, add the red wine and let it evaporate comple