Description:

This chard and spinach green soup has a complex flavor from slowly cooked onions and lemon juice. A small amount of rice gives it body and a velvety texture.

Ingredients:

• 2 tablespoons extra-virgin olive oil, plus more for garnish
• 2 large yellow onions, chopped
• 1 teaspoon salt, divided
• 2 tablespoons plus 3 cups water, divided
• ¼ cup arborio rice
• 1 bunch green chard (about 1 pound)
• 14 cups gently packed spinach (about 12 ounces), any tough stems trimmed
• 4 cups vegetable broth, store-bought or homemade
• Big pinch of cayenne pepper
• 1 tablespoon lemon juice, or more to taste