Asparagus Soup

Bahan-bahan (4 porsi)

• 1 ½ pounds asparagus (trimmed and washed)
• 1 tablespoon butter
• 1 small yellow onion (diced)
• 1 clove garlic (minced)
• 2 ¼ cups chicken broth (not low sodium)
• salt and black pepper (to taste)
• ½ cup heavy whipping cream (or to taste)
• ½ teaspoon fresh lemon juice
• shredded Parmesan cheese (for serving, optional)