Answer: vichyssoise

AnswerCrossword Clue
VICHYSSOISEEleven-letter soup
VICHYSSOISECold onion and potato soup
VICHYSSOISEPotato dish
VICHYSSOISECreamy chilled soup
vichyssoise(French) a soup made with potatoes, leeks, and cream, and usually served cold
vichyssoiseA soup made with potatoes, leeks, and cream and typically served chilled