This simple and vibrant soup makes the perfect starter to a spring dinner
- Heat oil in a large pan on moderate heat. Add sliced onion. Stir occasionally and cook until onion has softened. Add frozen peas and continue to stir.
- Add water and vegetable stock to pan. Simmer, covered, until peas are tender, about 5 to 10 minutes.
- Tip the soup into a blender and puree until smooth.
- When you're ready to serve, ladle soup into bowls and season with salt and pepper. Garnish with mint and a drizzle of yogurt.