4 tbsp. butter
2 tbsp. oil
6 lg. onions (Bermuda and 3 yellow) firmly sliced
Salt and pepper
1 tsp. flour
1/2 tsp. French Dijon mustard
1/2 c. white wine
1/2 can beer (the other 1/2 is for you!)
2 1/2 c. grated Swiss cheese
French bread, sliced
2 1/2 to 3 1/2 c. beef bouillon

Melt butter and oil in frying pan. Add onions, salt, and pepper. Saute slowly over a low fire until onions are very brown (20-30 minutes). Add flour and mustard and stir well, until smooth. Continue stirring while adding the wine, beer, and stock. Bring slowly to a boil. Draw aside and simmer 15 minutes. Put thick slices of French bread into individual casserole dishes, add soup and sprinkle with cheese and brown quickly under the broiler (serves 4).

If made day ahead, do not simmer last 15 minutes.