Guinness Beer Cheese Soup

Ingredients

• 3 tablespoons butter
• 1 medium onion, diced
• 1/2 cup carrots, diced
• 2 cloves garlic, minced
• 1 teaspoon salt
• 1 teaspoon pepper
• 1/4 cup flour
• 2 cups milk
• 3 cups chicken stock
• 12 oz Guinness beer
• 2 medium russet potatoes, peeled and diced
• 2 tablespoons Worcestershire sauce
• 1 teaspoon dry mustard
• 2 cups shredded cheddar cheese
• 1/4 cup cooked and crumbled bacon for topping, optional
• 1 teaspoon chopped chives, optional