Preparation Heat oil in a large heavy pot over medium heat. Add carrots, spring onions, and garlic and season with salt. Reduce heat to medium-low, cover, and cook, stirring occasionally, until vegetables are soft, 15-20 minutes. Add broth and bring to a boil. Add asparagus, sugar snap peas, and peas and cook until vegetables are crisp-tender, about 3 minutes. Meanwhile, beat eggs in a small bowl with 1 tablespoon Parmesan, a pinch of salt, and 1 tablespoon water. Reduce heat to low and stir basil and mint into soup. Drizzle in egg mixture in 4 or 5 spots around pot. Let stand for 1 minute so egg can set, then gently stir in 1 1/2 teaspoons lemon juice. Season soup with salt and more lemon juice, if desired. Serve soup topped with more Parmesan.
Preparation Heat oil in a large heavy pot over medium heat. Add carrots, spring onions, and garlic and season with salt. Reduce heat to medium-low, cover, and cook, stirring occasionally, until vegetables are soft, 15-20 minutes. Add broth and bring to a boil. Add asparagus, sugar snap peas, and peas and cook until vegetables are crisp-tender, about 3 minutes. Meanwhile, beat eggs in a small bowl with 1 tablespoon Parmesan, a pinch of salt, and 1 tablespoon water. Reduce heat to low and stir basil and mint into soup. Drizzle in egg mixture in 4 or 5 spots around pot. Let stand for 1 minute so egg can set, then gently stir in 1 1/2 teaspoons lemon juice. Season soup with salt and more lemon juice, if desired. Serve soup topped with more Parmesan.