1/4 c. white wine vinegar
1/4 c. olive oil
2 tbsp. sugar
1 sm. onion, chopped
1 garlic clove, minced
4.5 oz. jar Green Giant whole mushrooms, drained

In non-metal container, combine all ingredients except mushrooms; mix well. Stir in mushrooms. Cover. Refrigerate several hours or until serving time, stirring occasionally. About 48 mushrooms.