Best Make Ahead Gravy for Turkey

Bahan-bahan (12 porsi)

• 4 turkey wings or other parts (4 to 5 pounds total)
• 2 medium onions (roughly chopped)
• 1 cup water
• 6 cups chicken broth (*)
• 1 -2 carrots (chopped)
• ½ teaspoon thyme (dried)
• 3/4 cup all-purpose flour
• 2 cups chicken broth (*)
• 2 tablespoons butter
• 1/2 teaspoon ground pepper (more to taste)
• 1/2 to 1 teaspoon salt