2Fuji applesor any red apple, peeled, cored, chopped
Heat the oil in a stockpot or soup pot, add in onion, sauté five minutes until clear, add in celery and stock. Bring to a boil, reduce heat, simmer 10 minutes.
Stir in apples & chives, cook for 10 more minutes. Remove from heat and let cool. Process mixture in a food processor, blend until smooth. Return soup to the pan, stir in yogurt. Garnish with celery leaves. This soup can be served warm or cold.