Turkey w/Prunes

Ingredients

• 1 12-to-13-pounds turkey
• 1 tablespoon salt
• 2 tablespoons mustard
• 1/2 to 1 cup vegetable oil
• 1 large onion, finely chopped
• 1 large whole fennel, coarsely chopped
• 3 whole oranges with skin, each cut in 8 pieces
• 24 ounces pitted dried prunes