Marinated Mushrooms - cooking recipe

Ingredients

1/3 c. red wine vinegar
1/3 c. oil
1 onion, thinly sliced
1 tsp. salt
2 tsp. parsley flakes
1 tsp. prepared mustard
1 Tbsp. brown sugar

Preparation

Boil these ingredients 2 to 3 minutes.
Add sliced mushrooms and cook 5 to 6 minutes.
Let stand.