In a large stock pot over medium heat, melt the butter.
3 tablespoons unsalted butter
Add in the diced celery, carrots, onions, and garlic. Season with salt, pepper, sage, and thyme. Stir regularly, sautéing until the vegetables are tender, about 5 to 7 minutes.
3 celery stalks, 2 medium carrots, 1 small yellow onion, 2 cloves garlic, 1 1/2 teaspoon dried thyme, 1 teaspoon kosher salt, 1/4 teaspoon black pepper, 1 1/2 teaspoon dried sage rub
Stir in the flour, allowing it to fully coat the vegetables.
1/3 cup all-purpose flour
Very slowly stir in the chicken stock. Start with just a little at a time, about two tablespoons, only adding more once the last bit is absorbed. It should take at least a minute to stir in all of the stock.
6 cups chicken stock
Once all of the stock is added, bring it to a boil. Add the dry noodles and cook for 1 minute less than the time indicated on the noodle box.
2 cups dry rotini
Once the noodles are done cooking, remove the soup from the heat. Stir in the turkey, heavy cream, and corn. Taste and add more salt and/or pepper to taste.
3 cups cooked turkey, 1 1/4 cups heavy cream, 1 cup frozen corn