- Melt butter in stockpot, sweat leeks until tender.
- Add potatoes and water/base powder to stockpot. Liquid should cover potatoes by 3". Bring to boil, lower heat to medium. Simmer 45 minutes or until potatoes are tended.
- Add spices to soup. Simmer 10 minutes. Turn off heat, let cool.
- Process to smooth, adding cream while processing.
- Garnish with scallions or deep fried leeks.