1Method & Technique:
Sweat shallots and onion in olive oil over medium heat until beginning to color. Add mushrooms and continue to cook for 8-10 minutes. Add herbs. De-glaze with white wine and reduce until almost dry. Add vegetable stock and heavy cream and simmer until liquid has reduced by 25%. Puree in a blender until smooth. Season with salt and white pepper and strain through a sieve. Fill pint-size iSi Gourmet or Thermo Whip canister with hot soup. Secure the top and charge with one or two iSi N2O cream chargers. Shake and keep warm in a hot water bath at 160-180 degrees F.
Yield: 10 cups. For the quart-size iSi Gourmet or Thermo Whip, simply double the recipe.
From south of the border comes this spicy and hearty soup ladled over crisp tortilla strips and grated cheddar. The soup is chunky with chicken and avocado, but it's the tortillas that give it a slight thickness and a special flavor.