Chilled Cucumber Soup

Add the oil and onion to a large pan and saute for approximately 10 minutes or until onion has softened. Add the cucumber and cook until cucumber is tender. Transfer the mixture to a blender or food processor and carefully blend until smooth. (Caution! Hot liquids create steam which will blow the top off the blender! Be sure to securely hold blender lid down!) Return the pureed mixture to the pot and add the stock and cream. Over medium-high heat, stirring constantly, bring to a boil. Reduce heat and simmer for 5 minutes. Cool to room temperature and then refrigerate until well chilled. To serve, ladle soup into bowls and garnish with fresh mint, if desired.