1 pound spring onions, greens attached
2 green garlic stalks, greens attached
2 tablespoons olive oil
½ teaspoon sea salt, plus more to taste
Fresh ground pepper
1 medium Yukon Gold potato, chopped into ¼-inch pieces
½ cup dry white wine
1 quart broth, vegetable or chicken
3 cups young leafy greens (arugula, spinach or chard)
¼ cup Parmigiano-Reggiano, shaved
2 tablespoons chives, minced
lemon oil for serving