01 - Melt the butter in a large saucepan over medium heat. Add the chopped onion and cook for 3 to 4 minutes until softened without browning.
02 - Incorporate the minced garlic and sauté for 1 minute until fragrant.
03 - Stir in the peas and cook for 2 minutes to combine flavors.
04 - Add the vegetable broth and bring to a boil. Reduce heat and simmer gently for 8 to 10 minutes, until peas are tender.
05 - Remove from heat and blend the mixture until completely smooth using an immersion blender or by processing in batches with a stand blender.
06 - Stir in the heavy cream, then season with salt and pepper to taste. Reheat gently without boiling if necessary.
07 - Ladle the soup into bowls, swirl with extra cream or crème fraîche if desired, and garnish with fresh mint leaves.