1 tbsp. unsalted butter
1 1/2 tsp. olive oil
1/2 lb. thin sliced onions
1/4 lb. leeks (white part), thinly sliced
1 garlic clove, chopped
1/4 tsp. sugar
1 1/2 tbsp. flour
4 c. vegetable stock
1/4 c. dry vermouth
Dash of Tabasco
Salt and pepper
Toasted French bread slices
Thinly sliced Gruyere cheese

Cook oil, onions, leeks, 15 minutes. Add sugar. Cook until onions are deep brown 30 minutes. Add stock, etc.; simmer 4 minutes. Can be prepared 1 day in advance. 2 crocks in broiler with several cheese slices. 2 servings.