Ingredients:
3 teaspoonssalt
1 poundgreen beans, trimmed
4 garlic cloves
3 tablespoonsextra-virgin olive oil
1 small white onion (about 5 ounces), finely chopped (about 1 cup)
2 scallions, white and some green parts, finely chopped
1/2 cupwhole milk
Directions:
Bring 3 quarts of water to a boil in a large pot. Add 2 teaspoons salt, then add the beans and cook for 2 to 3 minutes. Drain and plunge into a bowl of ice water to cool, then drain again and set aside.
Crush the garlic and remaining 1 teaspoon salt to a paste with a mortar and pestle; set aside.
Heat the oil in a 12-inch skillet over medium heat. Add the onion and scallions and sauté until soft, about 5 minutes. Add the garlic and saute for about 2 minutes.
Stir in the green beans and milk, bring to a boil over high heat, and cook until the sauce thickens, about 2 minutes. transfer to a serving bowl and bring to the table immediately.