Grandma'S Salad Dressing - cooking recipe

Ingredients

1 cup vegetable oil
3/4 cup cider vinegar
2/3 cup sugar
1/2 cup ketchup
2 teaspoons Worcestershire sauce
1/2 teaspoon salt
1 dash black pepper
1 medium onion, chopped fine

Preparation

Combine all ingredients well, chill for 1 day, shake well and serve.