Venison without bread brandy

1 (2 pound) boneless venison roast 1 liter ginger ale 1 (32 ounce) carton chicken broth 1 teaspoon ground cumin 1/4 teaspoon black pepper 1/8 teaspoon crushed[...]

4 tablespoons unsalted butter 1 red onion, chopped 4 cloves garlic, minced 4 tablespoons dark brown sugar 3 cups red wine 4 tablespoons red wine vinegar 4[...]