1 onion
1 clove garlic, split
3 tbsp. butter
1 tbsp. olive oil
1 lb. fresh mushrooms
1/4 c. tomato paste
5 c. chicken broth
1 tsp. marjoram
Salt and pepper
1 tsp. lemon juice
2 tbsp. red wine

Using a food processor fitted with a steel blade, mince onion. Cook onion and garlic in heavy saucepan in 1 tablespoon butter and olive oil until just beginning to brown. Discard garlic.

Separate mushroom stems from caps. Mince stems and 1 cup mushroom caps in food processor. Add to onions. Fit food processor with slicing disk. Carefully place remaining mushrooms in feed tube and gently push through to obtain even slices. Add to onions with 2 tablespoons butter; saute about 5 minutes. Add tomato paste and chicken stock, mixing well. Add seasonings, lemon juice, and wine; simmer 10 minutes longer.