Bring the chicken broth to a boil, add the onion flakes and the sage powder and boil for 3-4 minutes until it has reduced by half.3 cups chicken broth 1 teaspoon dried onion flakes ¼ teaspoon dried sage powder
Mix the cornstarch with the cold water to make a slurry.2 tablespoons cornstarch 1 tablespoon cold water
Slowly whisk the cornstarch slurry into the broth until it thickens to a gravy-like consistency.