Citrus And Onion Salad
["1/2 c. vegetable oil", "1/3 c. white wine vinegar", "3 to 4 Tbsp. sugar", "1 tsp. Lawry's seasoned salt", "3/4 tsp. dry mustard", "2 to 3 large navel oranges, peeled and thinly sliced crosswise", "1 grapefruit, peeled and thinly sliced crosswise", "1 medium red onion, thinly sliced and separated into rings", "spinach leaves"]
["In small jar with tight fitting lid, combine oil, vinegar, sugar, seasoned salt and mustard; shake to blend well.", "In shallow dish, layer oranges, grapefruit and onion; pour the dressing over to coat.", "Cover and refrigerate 1 hour or overnight.", "Remove fruit slices and onion from marinade; reserve marinade.", "Arrange on individual salad plates lined with the spinach leaves."]
["vegetable oil", "white wine vinegar", "sugar", "salt", "dry mustard", "oranges", "crosswise", "red onion", "spinach leaves"]