Sup Asparagus Krim

Bahan-bahan (6 porsi)

• 1 tablespoon olive oil
• 1 tablespoon bawang putih cincang
• 1 cup chopped white onion (about 1 small onion)
• 2 tablespoons mentega tawar
• 2 tablespoons all-purpose flour
• 5 cups kaldu ayam (atau kaldu sayuran)
• 2 pounds asparagus cut into 1-inch pieces (2 bunches)
• ½ cup heavy whipping cream
• 1 teaspoon salt (or to taste)
• ¼ teaspoon ground black pepper (or to taste)