One of the most valuable lessons my mother ever taught me in the kitchen was to add a splash of fortified wine -- sherry, brandy, Cognac -- whenever I'm making a vegetable soup. With just the right amount, you get an extra layer of flavor without actually making the soup taste boozy. While I favor sherry for richer soups like pumpkin or corn chowder, I like Cognac for a light spring purée like the asparagus soup below. A hit of fresh tarragon plays up the grassy nature of the asparagus, and a bit of Greek yogurt lends creaminess without muffling the other components.
Cream of Asparagus Soup with Yogurt and Tarragon
Serves 4 as a starter
- 1 tablespoon safflower oil
- 2 large scallions, thinly sliced into half-moons
- 1 1/2 lbs. asparagus, ends trimmed and cut into 1 1/2 inch lengths
- 1/4 teaspoon kosher salt
- Splash of Cognac (sherry or brandy will do)
- Pinch of freshly ground nutmeg
- Freshly ground black pepper
- 3 cups chicken stock or water
- 1 1/2 teaspoons chopped fresh tarragon
- 1/4 cup Greek yogurt, plus more for serving
1. Warm the oil in a large saucepan over medium heat. Add the scallions and cook for a minute to soften slightly. Turn up the heat to medium high, add the asparagus and salt and sauté, stirring occasionally, for a minute or two, until the asparagus turns a vibrant green.
2. Add the Cognac or sherry or whatever you're using, the nutmeg and a few generous grinds of black pepper. Cook for another thirty seconds and then add the chicken stock. Bring to a boil, then lower the heat and simmer until the asparagus is just tender when pierced with a knife, another 3 or 4 minutes. Turn off the heat and stir in the tarragon.
3. Carefully purée the hot soup in two batches using a blender and adding half of the yogurt to each batch. Put the puréed soup through a medium-fine strainer to get rid of any fibrous bits. Taste the soup and add more salt and pepper if necessary. To reheat, bring the soup to just below a simmer over medium heat, ladle into individual bowls and add a dollop of yogurt to each.
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