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.
Softened vegetables, including onions and bell peppers, amped up with spices like chili powder, cumin, oregano, and cayenne, form the base of this tortilla soup. Chicken broth and tomatoes are added, along with soft corn tortillas that meld into the liquid to make a hearty, thick meal. Finally, shredded chicken is stirred in, and everything is garnished with crunchy tortilla strips, sour cream, shredded cheese, and scallions (avocados, pickled jalapeños, and cilantro would all work too).
Basic Vegetable Soup
This soup is an equally wonderful way to use up all the leftover veggie odds and ends in your fridge, or to celebrate the freshest produce in season by buying it specifically for the dish (and if you get a CSA box, it can serve both purposes). Whatever vegetables you use, this is an easy, nutritious, and delicious meal, and endlessly customizable. Fresh pesto makes a great, vibrant garnish, but you could also simply sprinkle on a bit of grated Parmesan and cracked black pepper.
Classic Tomato Soup
This comforting tomato soup is super easy and super delicious. Canned San Marzano tomatoes marry with soft, sautéed onions and garlic, a pinch of red pepper, and chicken broth to create a soothing, savory bowl. Finished with a bit of cream, this is begging for a grilled cheese sandwich on the side. But really, it tastes great with lots of things, as well as on its own (though a basil and Parmesan garnish doesn't hurt).
Easy Lentil Soup
This easy lentil soup is healthy, filling, and delicious. It happens to be vegetarian, too, and is packed not only with tender yet toothsome lentils, but carrot, celery, onion, spinach, and tomato. A little bay leaf, fresh thyme, and a splash of red wine or sherry vinegar perks everything up. Perfect with a loaf of good, crusty bread!