asparagus soup recipe

#### Ingredients: - **2 tablespoons olive oil or butter** - **1 medium onion** (chopped) - **2 cloves garlic** (minced) - **2 lbs fresh asparagus** (trimmed and cut into 1-inch pieces) - **4 cups chicken or vegetable broth** - **1 cup heavy cream** - **Salt and pepper** (to taste) - **Juice of 1 lemon** - **1/4 cup grated Parmesan cheese** (optional) - **Fresh herbs** (such as parsley or chives, for garnish)