1/3 c. salad oil
1/3 c. red wine, vinegar
1 sm. onion, thinly sliced
1 tsp. salt
2 tsp. dried parsley flakes
1 tsp. dry mustard
1 tbsp. brown sugar
1 lb. fresh mushrooms

In small saucepan, combine salad oil, red wine vinegar, onion (thinly sliced) and separated in rings, salt, parsley, mustard and brown sugar. Bring to a boil. Add mushrooms. Simmer covered 5 to 6 minutes. Chill in covered dish overnight. Stir occasionally. Serve.