Sweet Potato Soup

Heat oil in a heavy-bottomed pot. Saute celery and onions until tender and fragrant.

Add sweet potatoes and cook for 1 to 2 minutes. Add the rest of the ingredients and bring to a boil.

Turn down heat to medium-low. Simmer for 25 to 30 minutes or until sweet potatoes are tender

Discard bay leaf. Let cool for a few minutes. Blend soup in batches until smooth using a blender.

Return soup to the pot and bring to a boil. Divide among serving bowls and top with croutons or nuts.