Chicken & Sweet Potato Stew

Ingredients

• 6 bone-in chicken thighs, skin removed, trimmed of fat
• 2 pounds sweet potatoes, peeled and cut into spears
• 1/2 pound white button mushrooms, thinly sliced
• 6 large shallots, peeled and halved
• 4 cloves garlic, peeled
• 1 cup dry white wine
• 2 teaspoons chopped fresh rosemary or 1/2 teaspoon dried rosemary, crushed
• 1 teaspoon salt
• 1/2 teaspoon freshly ground pepper
• 1 1/2 tablespoons white-wine vinegar