After soaking a pint of white beans for four hours, cook them in a saucepan with one ounce of butter and two sliced onions, and moisten with three pints of white broth (No. 99); season with half a tablespoonful of salt and a teaspoonful of pepper. Boil for forty-five minutes; then rub through a fine sieve, and serve with a thickening of two egg yolks and half a cupful of cream. Add twelve quenelles to the soup (No. 231), and serve.