Early Dismissal Pot Roast

Name: Early Dismissal Pot Roast
Ingredients: 1 (16-ounce) container sour cream; ¼ cup chopped fresh parsley; ¼ cup chopped fresh basil; ¼ cup prepared horseradish Kosher salt; 1 (3-pound) boneless chuck roast or bottom round; Kosher salt and freshly ground black pepper; 2 tablespoons extra-virgin olive oil; 4 ounces cubed pancetta; 4 medium carrots; 2 celery stalks; 1 large white onion; 8 garlic cloves; 1 tablespoon tomato paste; ½ cup red wine; 1 (28-ounce) can crushed tomatoes; 1 large bulb fennel, halved and thinly sliced; 1 pound peeled pearl onions; 8 ounces sliced cremini mushrooms; 2 parsley sprigs; 2 rosemary sprigs; 2 sage sprigs; Herby Horseradish Cream, for serving