Portugal's most iconic national soup: a velvety, comforting purée of potatoes, onions, and garlic loaded with ultra-finely shredded Portuguese couve-galega kale and rich olive oil.
In a soup pot, combine diced potatoes, onion, garlic, water, and salt. Bring to a boil and cook for 20 minutes until potatoes are completely soft.
Purée the hot potato and onion broth with an immersion blender until completely silky, pale, and velvety.
Bring the velvety soup back to a gentle simmer. Drop in the ultra-finely shredded couve-galega greens. Simmer uncovered for just 4-5 minutes so the greens turn tender while staying bright, vibrant green.
Swirl in high-grade extra virgin olive oil just before taking off heat. Ladle into traditional terracotta bowls and serve hot with thick slices of cornbread (broa de milho).