Marinated Beef Kebabs
["1/2 c. vegetable oil", "2 Tbsp. cider vinegar", "1 tsp. celery salt", "1 tsp. onion salt", "3/4 tsp. garlic salt", "1/2 tsp. salt", "3/4 tsp. crushed oregano", "1/2 tsp. pepper", "1 boneless beef shoulder, cut into 1-inch cubes", "6 medium mushroom caps", "2 small zucchini, cut in 1/2-inch pieces"]
["Combine oil, vinegar and salts, oregano and pepper in a saucepan.", "Bring to boil.", "Remove from heat.", "Let stand until cool.", "Place meat in a shallow pan.", "Add mushrooms and zucchini. Pour marinade over meat and vegetables.", "Cover or seal. Refrigerate 4 to 6 hours, turning occasionally.", "Alternately thread meat and veggies on skewers.", "Grill over hot coals 10 to 15 minutes or until done, basting often."]
["vegetable oil", "cider vinegar", "celery salt", "onion salt", "garlic salt", "salt", "oregano", "pepper", "beef shoulder", "mushroom caps", "zucchini"]