Cream of Celery Soup

Bahan-bahan (4 porsi)

• 2 tablespoons butter
• 8 celery ribs, diced
• 1 large leek, diced (white and light green parts only)
• 1 medium white onion, diced
• 4 large cloves garlic, minced
• 4 cups vegetable broth
• 2 bay leaves
• 1 (15-ounce) can Great Northern beans, drained and rinsed
• 1/3 to 1/2 cup heavy cream
• 1 to 2 tablespoons freshly-squeezed lemon juice
• fine sea salt and freshly-cracked black pepper
• fresh chives, for serving (optional)