5-Ingredient Potato Soup

Bahan-bahan (4 porsi)

• 6 strips bacon, diced
• 3 scallions, thinly sliced (white and green parts separated), plus extra for serving
• 4 cups chicken stock
• 2 pounds Yukon Gold potatoes, diced into ¾-inch pieces
• 1 1/2 cups shredded extra-sharp cheddar cheese, plus extra for serving
• fine sea salt and freshly-ground black pepper