2 tablespoons chicken fat or olive oil
1 1/2 cups chopped white onion
1 1/4 pounds carrots, peeled, diced, plus 1 carrot, peeled, halved lengthwise
3 3/4 cups low-salt chicken broth
3/4 cup diced peeled fuji apple plus 1/2 cup finely diced (for garnish)
2 teaspoons chopped fresh ginger
4 1/2 tablespoons frozen apple juice concentrate, thawed
1/4 teaspoon freshly grated nutmeg
1/4 teaspoon ground allspice
Coarse kosher salt
Chopped fresh mint