Green Pea Soup

Bahan-bahan (6 porsi)

• 3 tablespoons extra-virgin olive oil
• 1¼ cups roughly chopped shallots, (from 3 large shallots)
• 6 cups vegetable broth
• 2 lbs (6 cups) frozen peas
• 1 teaspoon salt
• ½ teaspoon freshly ground black pepper
• ½ cup roughly chopped fresh basil leaves, (plus more for serving)
• 2 tablespoons grated Parmigiano-Reggiano
• 2 tablespoons fresh lime juice, (from 1 lime)