In a medium saucepan, heat the olive oil. Add the onions, shallots and garlic and
saute until they just begin to color. Transfer half of the onion
mixture to a
blender or food processor.
Puree and return to the pan. Add the wine, bay leaf and stock and
simmer for 10 minutes. Season with salt and pepper. (The soup base may be pre
pared in advance to this point and stored refrigerated for up to 3 days or frozen indefinitely and reheated before finishing.) Just before serving, add the thyme, oregano, celery, leeks and sherry to the hot soup base. Bring to a
simmer and
simmer for 2 minutes. Do not overcook, the vegetables should retain their crunchy texture. Remove the bay leaf,
stir in the chives and garnish with a sprinkling of the Gremolata.