1 (16 oz.) can whole green beans or 2 c. fresh beans, slightly undercooked
5 to 6 lg. mushrooms, sliced
1 sm. red onion, sliced
1 clove garlic, pressed
1/4 tsp. salt
Freshly ground pepper
1/2 tsp. dried oregano
1/2 tsp. chervil
1/2 tsp. dried mustard
1/4 c. wine vinegar
1/4 c. olive oil (or any other)

Combine all the ingredients and allow to marinate for 24 hours, turning several times. Arrange on a platter to serve.