Chilled Lettuce Soup with Caesar Crackers

Instructions

1. 1

   In a large saucepan over medium heat, soften the leek and onion in the oil. Add the potato and broth. Bring to a boil. Reduce the heat, cover and simmer gently until the potato is tender, about 20 minutes. Add the lettuce. Bring to a boil and cook for 1 minute. Remove from the heat and add the yogurt.

2. 2

   Purée in a blender. Strain if desired. Let cool. Cover and refrigerate overnight. If the soup is too thick after chilling, add a small amount of chicken broth. Adjust the seasoning before serving (see note).