Cold Avocado Corn Soup with Cilantro Oil

Cooks' notes: •Soup can be chilled up to 1 day. •Cilantro oil can be made 3 hours ahead and chilled, covered.

Cold Avocado Corn Soup with Cilantro Oil
Cold Avocado Corn Soup with Cilantro Oil

PREP TIME

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minutes

TOTAL TIME

--

minutes

SERVINGS

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servings

PREP TIME

--

minutes

TOTAL TIME

--

minutes

SERVINGS

--

servings

Ingredients

  • For soup

  • 1

    fresh or frozen ear of corn, shucked

  • 4

    cups plus 2 tablespoons water

  • 1

    garlic clove, smashed

  • 1 1/2

    teaspoons salt

  • 1 1/4

    cups chopped white onion

  • 1

    fresh serrano chile, stemmed and coarsely chopped (including seeds)

  • 2

    firm-ripe California avocados (1 to 1 1/4 lb total)

  • 3

    tablespoons fresh lime juice

  • 1/4

    cup crema or sour cream

  • For cilantro oil

  • 1

    cup coarsely chopped fresh cilantro

  • 1/4

    cup olive oil

  • 1/2

    teaspoon salt

  • Special equipment: a 3/4-inch melon-ball cutter

Directions

Make soup: Roast corn on rack of gas burner over high heat, turning occasionally with tongs, until kernels are charred in spots, 4 to 5 minutes. (Alternatively, heat a dry well-seasoned cast-iron skillet and roast corn over moderately high heat, turning occasionally, about 10 minutes.) Transfer corn to a cutting board and, when cool enough to handle, cut kernels from cob with a sharp knife, then cut cob into thirds. Bring kernels, cob pieces, 4 cups water, garlic, salt, and 1/2 cup onion to a boil in a 3-quart saucepan and boil until liquid is reduced to about 3 cups, about 20 minutes. Remove from heat and cool, uncovered. Discard cob pieces. Purée corn mixture along with chile and remaining 3/4 cup onion in a blender, then pour through a fine-mesh sieve into a bowl, pressing hard on and then discarding solids. Return broth to cleaned blender. Quarter, pit, and peel 1 avocado, then add to blender with 2 tablespoons lime juice and purée until smooth. Transfer soup to a bowl and cover surface with plastic wrap. Cover bowl with plastic wrap and chill soup at least 1 hour. Prepare cilantro oil while soup chills: Purée cilantro, oil, and salt in cleaned blender, scraping down sides of blender several times. Pour oil into cleaned fine-mesh sieve set over a bowl and let drain 15 minutes (do not press on solids). Discard solids. Assemble soup: Halve and pit remaining avocado and scoop small balls from flesh with melon-ball cutter, then toss gently with remaining tablespoon lime juice in a bowl. Whisk together crema and remaining 2 tablespoons water in a small bowl until smooth. Season soup with salt and ladle into 6 shallow soup bowls. Divide avocado balls among bowls, then drizzle with crema and cilantro oil.

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