Noel Coward's Warsaw Concerto
Eggs, onions, vinegar, breadcrumbs, butter, seasoning.
Cut the onions into thin slices and fry in butter until brown. Add a little vinegar, and continue frying for three to five minutes. Grease a fireproof dish and line with onions. Slide in the required number of eggs, whole, add
salt and pepper, and cover generously with breadcrumbs. Dab top with bits of butter and grated cheese. Bake in a hot oven for five to six minutes, when eggs should have set.