Grilled Marinated Mushrooms(Serves 8)  
["1/2 c. cider vinegar", "1 c. olive oil", "3 cloves garlic, minced", "2 Tbsp. fresh minced parsley", "1/2 tsp. dried oregano", "1/4 tsp. dried sage", "1/4 tsp. salt", "1/4 tsp. dried hot pepper flakes", "1 medium-sized red onion, sliced", "2 lb. large mushrooms, stems trimmed", "canola oil for brushing grill rack"]
["In a glass or ceramic bowl, mix together vinegar, oil, garlic, parsley, oregano, sage, salt, pepper flakes and onion slices. Clean mushrooms with a damp paper towel.", "Toss mushrooms with marinade.", "Cover tightly and refrigerate for 24 hours, tossing mushrooms occasionally."]
["cider vinegar", "olive oil", "garlic", "parsley", "oregano", "sage", "salt", "pepper", "red onion", "mushrooms", "canola oil"]