n a large pot, melt butter or heat olive oil over medium heat. Add chopped onion and cook until soft and translucent—about 5–7 minutes. Stir occasionally to prevent browning. If you’re feeling bold, toss in a clove of garlic for extra depth.

Add chopped asparagus to the pot and stir for a minute. Pour in the broth and bring everything to a simmer. Cook uncovered for 10–12 minutes until asparagus is tender. Don’t overcook—it dulls the flavor and color.

Using a blender or immersion blender, puree the soup until smooth and silky. Be careful with hot liquids—blend in batches if needed. For extra finesse, strain the soup through a sieve, but it’s optional.

Return the soup to the pot. Stir in crème fraîche, salt, and pepper to taste. A dash of lemon juice brightens everything up. Heat gently—don’t boil it after adding the crème fraîche.