Simple Boiled Pot Roast with Gravy

Ingredients

• 1 (3 pound) boneless beef sirloin tip roast
• 1 tablespoon canola oil
• 1 (14 ounce) can beef broth
• 3 tablespoons cider vinegar
• 2 garlic cloves, minced
• 1/2 teaspoon dried basil
• 1/4 teaspoon dried thyme
• 1 small head cabbage, cut into wedges
• 4 potatoes, quartered
• 2 onions, cut into wedges
• 3 carrots, cut into chunks
• 1 red bell pepper, cut into 1-inch pieces
• 1/2 teaspoon salt
• 1/2 teaspoon pepper
• 1/4 cup flour
• 1/4 cup cold water