Pea and onion soup

Description

In a large soup pot, heat the olive oil over low heat. Add the onion and cook, covered, until soft and translucent. Add the broth and bring to a boil. Reduce the heat and simmer uncovered for 10 minutes. Add the peas and cook for another 10 minutes if using fresh peas, or 4 minutes if using frozen. Blend the mixture in a blender until smooth and strain through a sieve into a bowl. Place the bowl into a larger bowl filled with ice water. Stir until the soup is cooled. Add the yogurt and season with salt and pepper. Divide among 4 serving bowls, garnish with tarragon sprigs, and serve.

Instructions