|Method:||Melt the butter in a stewpan, and put in the onions to stew
gently for 3 or 4 minutes; then add the celery, spinach, lettuces, and
parsley, cut small. Stir the ingredients well for 10 minutes. Now put in
the water, bread, seasoning, and mace. Boil gently for 1-1/2 hour, and,
at the moment of serving, beat in the yolks of the eggs and the vinegar,
but do not let it boil, or the eggs will curdle.